Question

A body of mass m rises to height h = R/5 from the earth's surface, where R is earth's radius. If g is acceleration due to gravity at earth's surface, the increase in potential energy is​

Answer 1

Explanation:

increase in potential energy = -GMm/R+h - ( - GMm/R )

height = R/5

total = 6R/5

increase in potential energy = -5GMm/6R + GMm/R

= GMm/6R