Torque,flywheels and angular acceleration

1. Aug 18, 2009

tomhitchmough

ive been trying to do this question all summer to no joy. ive got a flywheel in motion which then has a torque applied for short period and i need to find the angular acceleration. i know its something to do with inertia but im completely lost cheers

2. Aug 18, 2009

Staff: Mentor

Newton's 2nd law applied to rotation will give you the angular acceleration: Torque = Iα. (I is the rotational inertia of the flywheel.)

3. Aug 19, 2009

tomhitchmough

yer cheers ive done that and ive got a angular acceleration of 1000 rads-2 for 10kg disc radius 0.1m for a torque applied of 50Nm which seems a bit big