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 covred by the body after the string breaks is

Options

A. 2R
B. R
C. `Rsqrt(2)`
D. 4R

Answer

A

Explanation

Time taken by the body to reach the ground when
string breaks, `t=sqrt((2h)/(g))=sqrt((2xx2R)/(g)`
Hence, horizontal distance cocered by the body
`=v_Hxxt`
`=sqrt(gR)xxsqrt((4R)/(g))=2R`