Question

A ball of mass $m$ is attached with the string of length $R$, rotating in a circular motion, with instantaneous velocity $v$ and centripetal acceleration $a$.
Calculate the centripetal acceleration of the ball if its mass is doubled?

• A. $a/4$
• B. $a/2$
• C. $a$
• D. $2a$
• E. $4a$

Answer 1

The correct option is C $a$

As centripetal acceleration is given by $a=v^2/R$

therefore centripetal acceleration does not depend upon mass of ball, so it will remain constant ,equal to $a$.