Atwood machine by Breton Frères

Mid 19th-century mahogany Atwood fall machine by Breton Freres, Paris

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Details

Category:
Science Teaching
Object Number:
1989-263
Materials:
mahogany (wood), brass (copper, zinc alloy), steel (metal), paper (fibre product), box (wood), metal (unknown) and oak (wood)
Measurements:
overall: 2460 mm x 550 mm x 550 mm, 22 kg
pendulum: 1135 mm x 30 mm x 150 mm, 2.5 kg
type:
atwood machine
credit:
Christie's (South Kensington)

Parts

Atwood machine by Breton Frères

Atwood machine by Breton Frères

Atwood Machine, mahogany octagonal sectioned pillar with upper platform surmounted by an urn shaped finial with clockwork recorder specifically geared to time and motion, by Breton Freres, Paris

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The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Measurements:
overall: 2400 mm x 547 mm x 547 mm,
Materials:
mahogany (wood)
Object Number:
1989-263/1
type:
atwood machine
Pendulum from Atwood Machine

Pendulum from Atwood Machine

Pendulum from Atwood Machine, by Breton Freres, Paris

More

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Measurements:
overall: 1132 mm x 150 mm x 30 mm, 2.5 kg
Materials:
brass (copper, zinc alloy)
Object Number:
1989-263/2
type:
atwood machine and pendulums
Image ©
The Board of Trustees of the Science Museum
Opened disk from Atwood Machine

Opened disk from Atwood Machine

Middle scale marker, part of Atwood Machine, by Breton Freres

More

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Measurements:
overall: 64 mm x 140 mm x 255 mm,
Materials:
mahogany (wood) and brass (copper, zinc alloy)
Object Number:
1989-263/3
type:
atwood machine
Image ©
The Board of Trustees of the Science Museum
Pulley wheel from Atwood Machine

Pulley wheel from Atwood Machine

Pulley wheel from Atwood Machine, by Breton Freres

More

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Measurements:
overall: 60 mm 180 mm,
Materials:
brass (copper, zinc alloy)
Object Number:
1989-263/4
type:
atwood machine and wheels
Image ©
The Board of Trustees of the Science Museum
Opened disk from Atwood Machine

Opened disk from Atwood Machine

Top scale marker, part of Atwood Machine, by Breton Freres

More

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Measurements:
overall: 63 mm x 70 mm x 132 mm,
Materials:
mahogany (wood) and brass (copper, zinc alloy)
Object Number:
1989-263/5
type:
atwood machine
Image ©
The Board of Trustees of the Science Museum
Closed disk from Atwood Machine

Closed disk from Atwood Machine

Bottom scale marker, part of Atwood Machine, by Breton Freres

More

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Measurements:
overall: 65 mm x 67 mm x 130 mm,
Materials:
mahogany (wood) and brass (copper, zinc alloy)
Object Number:
1989-263/6
type:
atwood machine
Image ©
The Board of Trustees of the Science Museum
'Fir cone' weight from Atwood Machine

'Fir cone' weight from Atwood Machine

Chain winding mechanisms with ‘fir cone’ weight, part of Atwood Machine

More

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Materials:
metal (unknown) and string
Object Number:
1989-263/7
type:
atwood machine and weight
Image ©
The Board of Trustees of the Science Museum
Ball weights from Atwood Machine

Ball weights from Atwood Machine

2 cylindrical ball weights, part of Atwood Machine

More

The Atwood machine is, at its basis, a simple machine comprising of two weights suspended over a pulley wheel on a none stretching string. It is used to illustrate a number of theories involving zero and constant acceleration, measuring the vertical movement of the weights and the speed in which they move. Seemingly common sense, the machine proved for definite that if one weight (Mass 1) is heavier than the other weight (Mass 2), M1 would go down and M2 would go up. By considering the tension force of the string as well as the weight of the two masses, an equation can be worked out for acceleration as the masses move up and down the machine. Two real world examples of this principle are deployed in ski lifts and elevators with counterbalances.

Often included in physics textbooks, the Atwood Machine is still studied by most physics students and has been for over 200 years. The first machine was created in 1784 by the mathematician George Atwood who was well known for using examples like this to demonstrate complicated principles in his lectures at Trinity College, Cambridge. Atwood wanted his machine to be used for demonstrations to students, more so than in research.

The manufacturers of this specific Atwood Machine, Breton Frères, exhibited at the Great Exhibition in 1851, but apart from that, very little is known about the scientific instrument makers.

The machine appears to be in its original condition, despite the newer additions of weights and pulley cord which were likely added sometime after the Breton Frères completed the machine and before it came to the museum in 1989.

Materials:
brass (copper, zinc alloy)
Object Number:
1989-263/8
type:
atwood machine and weight
Image ©
The Board of Trustees of the Science Museum