A small mass m is moved slowly from the surface of the earth to a heig

1.	A small mass m is moved slowly from the surface of the earth to a height h above the surface. The work done (by an external agent) in doing this is(a) mgh, for all values of h(b) mgh, for h << R(c) 1/2 mgR, for h = R(d) - 1/2 mgR, for h = R
Answer» Correct Answer is: (b) mgh, for h << R , (c) 1/2 mgR, for h = R Work done = m x difference in gravitational potential.

A small mass m is moved slowly from the surface of the earth to a height h above the surface. The work done (by an external agent) in doing this is(a) mgh, for all values of h(b) mgh, for h << R(c) 1/2 mgR, for h = R(d) - 1/2 mgR, for h = R

Answer»

Correct Answer is: (b) mgh, for h << R , (c) 1/2 mgR, for h = R

Work done = m x difference in gravitational potential.