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Acceleration due to Gravity
The acceleration produced in the body on account of the force of gravity is called acceleration due to gravity. It is denoted by ‘g'. at a given place , the value of acceleration due to gravity is the same for all bodies irrespective of their masses. However , it differs from place to place on the surface of earth. It also varies with altitude and depth. The force with which a body is attracted towards the earth gives the weight of the body. F=mg (1) also, by newton's law of gravitation
From (1) & (2)
thus
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(2) 
