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A smooth steel ball is moving to and fro...

A smooth steel ball is moving to and fro about the lowest position of a frictionless hemispherical bowl. The ball attains a maximum height of 20 cm on either side of O. If g = 10 ms-2, and mass of the body is 5g, the speed of the ball when it passes through O will be:

A

`sqrt(3) ms^(-1)`

B

2 `ms^(-1)`

C

`sqrt(2) ms^(-1)`

D

0.2 `ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
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