... force exerted by electrostatic charge is called Electrostatic force. This type of force can be repulsive or attractive. For e.g. Rub a comb with a dry cloth and bring it near small pieces of paper. We would be astonished to discover that the pieces of paper are pulled towards the comb. This attraction is due to electrostatic force. 5. Frictional Force- The force which opposes the motion of a body moving on a surface is called Frictional force. This type of a force acts between the two surfaces in contact. For e.g. Roll a ball on a smooth polished surface, next on a rough floor. We will be surprised to discover that, on the smooth surface, it travels over a long distance before coming to rest as compared to the distance it travels on a rough surface. Weight and Mass- The gravitational pull of the Earth on a body is ...

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