It is talking about flywheel


I = Moment of inertia of the flywheel
α = Angular accelerant of flywheel
T(f) = Friction torque on bearing
F = Force act on string
T = Diving Torque
r = radius of flywheel


T=F x r= T(f)+Tx a




m = Mass of the falling mass
h = Height of falling mass from the ground
t = Time taken for the mass to reach the ground



F=m(g-a)

T=F x r = m(g-a) x r
α= a/r = 2h/t^2

then : T =m(g - 2h/t^2) x r


State the relationship between m, r and h between I and describe how these parameter affect the value I.

m: the falling mass
r: radius of flywheel
h: Height of falling mass from the ground



question 2 : Do the lines pass through the origin? If not why not? (plot the points of Torque T against angular acceleration)