kaspis245 said:Homework Statement
Cylindrical shape pulley ( m = 6 kg, R = 0.18 m) is rotating at a frequency f = 10 s-1. Due to constant torque it stops. Calculate the work done by the breaking force.
Homework Equations
w = 2πf
The Attempt at a Solution
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I can calculate the angular velocity:
w = 2πf = 62.8 rad/s
I don't know what to do now.
kaspis245 said:I don't know, it is not given. I think I'm suppose to find some kind of ratio.
kaspis245 said:Here is moment of inertia for a cylinder:
I = 1/2 MR2 = 1/2 * 6 kg * 0.18 m = 0.54 kg/m
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