- #1
Pushoam
- 962
- 52
Homework Statement
Homework Equations
The Attempt at a Solution
The correct option is d because
which body will fall first depends on the moment of inertia, the less MOI, the fast the body reaches the ground.
COM motion will not be applicable here as the friction force will be different for different material.
But since the motion is pure rolling, work done by the friction is 0. So, conservation of energy for pure rolling gives the speed of both the cylinders in terms of MOI. And it turns out that lesser the MOI, faster the speed. And faster the speed, less time would be taken for reaching the ground. Hence, the correct option is d.
Is this correct?[/B]