PHYSICS! need help!
posted by Randy .
A child pushes tangentially on a small hand driven merry go round. She is able to accelerate it from rest to 20 rpm in 10 s. Modeling the merry go round as a uniform disk of radius 3.5 m and mass 800 kg, find the torque required to produce that acceleration. Neglect the frictional torque.

PHYSICS! need help! 
Damon
now use your text and try to do the problems
torque = rate of change of angular momentum
= change in I omega/ change in time
initial omega = 0
final omega = 20 *2 pi /60 radians/second
Your text has a table of moments of inertia of shapes certainly including a solid disk with axis through the center like a wheel.
This is the last one I will help with. You are not trying.
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