Q. A small body of mass $m$ slides down from the top of a hemisphere of radius $r$. The surface of block and hemisphere are frictionless. The height at which the body lose contact with the surface of the sphere is
A) $\frac{3}{2}r$
B) $\frac{2}{3}r$
C) $\frac{1}{2}gt^{2}$
D) $\frac{v^{2}}{2g}$
Explanation
The correct answer is Option B: $\frac{2}{3}r$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.