- #1
dana711
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Homework Statement
A spool of thin wire rotates without friction about its axis. A man pulls down on the wire with force of 14.9N. How long does it take to increase the angular velocity of the spool from 11.0rad/s to 35.0rad/s?
Icm = 0.490kg*m^2
Inner radius, r = 0.280m
Outer radius, R = 0.600m
Homework Equations
w=d(theta)/dt
w=v/r
The Attempt at a Solution
im not sure how to do this. i know the equation for angular velocity but i don't know what to do with the force and time