* A ring, a solid cylinder, and a solid sphere roll without slipping down an inc

Question

* A ring, a solid cylinder, and a solid sphere roll without slipping down an incined they all start together at the top,
1) the ring reaches bottom first
2) the cylinder reaches bottom first
3) they reach the bottom at the same time
4) the sphere reaches bottom first
5) which reaches the bottom first depends on which has the greatest mass.
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* A net torque of 10 N.m is applied to a wheel with moment of feretion of 2.0 kg.m² . The angular acceleration of the wheel is :
1) 20.0 rad/s² 2) 40.0 rad/s² 3) 5.0 rad/s² 4) 2.5 rad/s²
5) 8rad/s²

Explanation / Answer

a) 4) the sphere reaches bottom first b)10/2 = 5 rad/s^2 (3)

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