Explain the meaning of the following statement '1 kgf = 9.8 N'.
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When we say that 1 kgf = 9.8 N, we mean that we have to exert a force of 9.8 N to hold a mass of 1 kg.
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How is the acceleration due to gravity on the surface of the earth related to it's mass and radius ?
Define the terms mass and weight.
Distinguish between mass and weight.
Write an expression for the force due to gravity on a body of mass m and explain the meaning of the symbols used in it.