Question

a body of mass m is moved from the ground to a height h. if force of gravity on mass of 1 kg is g newton, find (a)the force needed to lift the body (b) the work done in lifting the body and (c) the potential energy stored in the body.

Answer 1

(a) When a body of mass m at A on ground is raised above ground through height h at B force is applied . this force applied = weight of body

force on mass m =F= mg

Where

′

g

′

is the force of gravity on a mass of 1 kg

(b) Work done in lifting the body = Force × displacement hW=mg×h

(c) This work done W is stored in body in the form of potential energy P.E.mgh

please mark as the brainliest answer

thankyou