Question

If g is the acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass m raised the earth's surface to a height equal to the radius R of the earth, is
A) 1/2m g R
B)2 m g R
C) m g R
D) ¼ m g R​

Answer 1

Answer:

Acceleration due to gravity on earth's surface=g=

R

2

GM

.

Gain in potential energy=

R

GMm

−

2R

GMm

=

2R

GMm

=

2

1

mgR

Explanation:

A) 1/2m g R is your correct answer

Answer 2

Answer:

I hope it will help you

thanks