A spherical ball of mass m and radius r rolls without slipping on a rough concave surface of large radius R=(R= (9)/(7)m). It makes small oscillations about the lowest point. Find the time period.

A spherical ball of mass m and radius r rolls without slipping on a ro

1.	A spherical ball of mass m and radius r rolls without slipping on a rough concave surface of large radius R=(R= (9)/(7)m). It makes small oscillations about the lowest point. Find the time period.
Answer» `5pi sec` `sqrt(5)PI sec` `(6pi)/(7) sec` `sqrt((7)/(2)) pi sec` ANSWER :C