Question

A body is just being revolved in a vertical circle of radius $R$ with a uniform speed. The string breaks when the body is at the highest point, the horizontal distance converted by the body after the string breaks is:

• A. $2R$
• B. $R$
• C. $R\sqrt{2}$
• D. $4R$

Answer 1

The correct option is A $2R$

At highest point velocity will be $v=\sqrt{gR}$ and it will be parallel to ground.

Time taken to reach ground,

$2R=\frac{1}{2}g{t}^2$

$t=2\sqrt{\frac{R}{g}}$

Horizontal distance covered $=v\times t=2R$