Question

A particle of mass $m$ is released from a height $H$ on a smooth curved surface which ends into a vertical loop of radius $R$, as shown. Choose the correct alternative(s) if $H=2R$.

• A. The particle reaches the top of the loop with zero velocity.
• B. The particle cannot reach the top of the loop.
• C. The particle breaks of at a height $h=R$ from the base of the loop
• D. The particle breaks off at a height $h$ from the base of the loop such that $R<h<2R$

Answer 1

Answer: (B), (D)

The correct options are
B The particle cannot reach the top of the loop.
D The particle breaks off at a height $h$ from the base of the loop such that $R<h<2R$