Question

A body rolls down an inclined plane without slipping. The kinetic energy of rotation is $50\%$ of its translational kinetic energy. The body is :

• A. Solid sphere
• B. Solid cylinder
• C. Hollow cylinder
• D. Ring

Answer 1

Answer: (B)

$\frac{1}{2}I{\omega }^2=\frac{1}{2}\times \frac{1}{2}m{v}^2$
$I=\frac{1}{2}m{R}^2$
Body is solid cylinder