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A tunnel has been dug through the centr...

A tunnel has been dug through the centre of the earth and a ball is released in it. It will reach the other end of the tunnel after

A

84.6 min

B

42.3 min

C

1 day

D

will not reach the other end

Text Solution

Verified by Experts

The correct Answer is:
B
(b)Ball will execute SHM inside the tunnel with time period
`T=2pisqrt(R//g)=84.63` min
Hence, time do reach the ball from one end to the other end of the tunnel `t=(84.63)/(2)=43.3` min.
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