A body projected vertically from the earth reaches a height equal to earth'sradius before returning ot the earth. The power exerted by the gravitational force is greatest:

A body projected vertically from the earth reaches a height equal to e

1.	A body projected vertically from the earth reaches a height equal to earth'sradius before returning ot the earth. The power exerted by the gravitational force is greatest:
Answer» at the highestposition of the body. at the instant just before the body hits the earth. it remains CONSTANT all through. at the instant just after the body is projected. Solution :Power, `P=F.v`. Since F and v are maximum when the body is just to HIT the each. so power EXERTED by earth WOULD also be max. at that instant. Thus correct choice is (B).

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A body projected vertically from the earth reaches a height equal to earth'sradius before returning ot the earth. The power exerted by the gravitational force is greatest:

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