Question

A body of mass 'm' is raised from the surface of earth to a point which is at a height nR from the surface of the earth. The change in PE is (A) nmgr (B) 2mg 72 (C) na mgR n+1 (D) mgR 72​

Answer 1

$\sf Answer$

Work done in raising a body from ground to a certain height = Potential energy possessed by the body

Change in P.E = mgh

Change in P.E = mgnR

Option (A) might be.