Q.
A sphere of mass $m$ makes SHM in a hemispherical bowl $ABC$ . It moves from $A$ to $C$ , and then back to $A$ via $ABC$ . It is considered that $PB=h$ . If acceleration due to gravity be $g$ then the speed of the ball when it just crosses the point $B$ will be,

NTA AbhyasNTA Abhyas 2020
Solution: