A stone is dropped from a height equal t...

A stone is dropped from a height equal to `3R`, above the surface of earth. The velocity of stone on reaching the earth's surface is

`sqrt(g R/2)`

`sqrt(3/2 gR)`

`sqrt(2gR)`

`sqrt(gR)`

Text Solution

Verified by Experts

The correct Answer is:

`1/2mv^(2)=((mg)Rh)/(R+h)=((mg)R(nR))/(R+nR)`

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