This video lecture from Work and Energy (F.Sc. first year physics) covers Gravitation, Work done by Gravitational force and nature of work in gravitational field with the help of graph. Also it explains the derivation of the formula W=fd=mgh for work done in a gravitational field near earth’s surface. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.