JEE MAIN - Physics (2021 - 20th July Evening Shift - No. 11)
A body rolls down an inclined plane without slipping. The kinetic energy of rotation is 50% of its translational kinetic energy. The body is :
Solid sphere
Solid cylinder
Hollow cylinder
Ring
Explanation
$${1 \over 2}I{\omega ^2} = {1 \over 2} \times {1 \over 2}m{v^2}$$
$$I = {1 \over 2}m{R^2}$$
Body is solid cylinder
$$I = {1 \over 2}m{R^2}$$
Body is solid cylinder
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