Question

The magnitude of gravitational potential energy of a body at a distance r' from the centre of the earth is v'. Its weight at a distance 3r' from the centre of the earth is (re < r)

Answer 1

Answer:

Explanation:

THE G:P=V IN CASE OF RADIUS IS R AND THEY ASK FOR 2R

SO,V=GMm/R

IN CASE OF 3R THE G:P IS GMm/(3R)SQUARE ×3R

SO THE ANSWER IS GMm/3R

SO, V/3