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Question

Differences between mass of an object and its weight? ( minimum 6 points)

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Solution

(1) The quantity of matter in a body is called its mass. (1) Weight is the force by which the earth attracts a body towards its center.
(2) Mass is a scalar quantity. (2) Weight is a vector quantity and is always directed towards the center of the earth.
(3) Mass of a body is always constant every where in the universe. (3) Weight of a body vary place to place and become zero on the center of earth and far away from the surface of earth.
(4) Mass of a moving body is m=F/a. (4) Weight of a body is W = mg.
(5) Mass can be determine by an ordinary balance. (5) Weight of a body is measured by spring balance.
(6) Unit of mass in S.I system is KILOGRAM ( kg). (6) Unit of weight in S.I system is NEWTON (N).

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