Question

Calculate the work done against the gravity ?

Answer 1

Hello

Answer

Suppose a body of mass m  is lifted vertically through a distance h . In this case , the force required to lift the body will be equal to weight of the body , mg (Where  m  is mass and g is acceleration due to gravity )

NOW

Work done in lifting a body = weight of body * vertical distance

                                          W = mg * h

                                               = mgh

Where  W = work done and

h =height through which is the body is lifted

                                                                                                                                         

Hope it helps you