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[Page 12]
Ooctobritve
Atwoods Machine
s = Space descended in the Time.
t = Time of descent in Seconds.
L/2 g = 16 1/12 Space descended freely by any body, by the Power of Gravity in one second – 193 Inches.
p = Weight which produced the descent through the Space s in the Time t.
Q = the Friction & Inertia of the Machine.
Noclovitve t2. L/2 g = 144.75/3.208 = 45.12 &45.75 x 30 = 1353
s
Q = p. t. L/2 g = p
s
By Experiment It was found that 30 Troy Grains descending From Rest (the Silken line being unwound
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from the Circumference of the large Pulley)described a space of 38½ Inches in 3 Seconds.
(or in feet
According to the above Theorum (Q = 30 x 144.75 – 30 = 1323
3.205
(Noctolitive)
Q = 30 x 32 x 193 – 30 Or Q = 30 x 9 x 193 – 30 = 30 x 1737 – 30 =
38.5 38.5 38.5
Q = 30 x 9 x 193– 30 = 270 x 193– 30
38.5 38.5
Q = 52,110– 30 = 1353 – 30 = 1323
38.5
Q = 1323 Troy Grains
& 1323/480 = 2.75 or 2¾ Troy Ounces
2 ¾ Oz = Friction & Inertia of the Machine
