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A stone falls freely under gravity. It c...

A stone falls freely under gravity. It covers distances `h_(1), h_(2)` and `h_(3)` in the first 5 s, the next 5 s and the next 5 s respectively. The relation between `h_(1), h_(2)` and `h_(3)` is

A

`1/2 m`

B

`1m`

C

`4m`

D

`1/4 m`

Text Solution

Verified by Experts

The correct Answer is:
D
At the top most point `v=u cos theta=sqrt(10) cos 60^(@)=sqrt(10)/2`

`:. Mg=(mv^(2))/R, R=((sqrt(10)/2)^(2))/10=10/40 R=1/4 m`
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