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What is the point mass? Give the examples. |
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Answer» SOLUTION :(i) The mass of any object be assumed to be concentrated at a point. (ii) Then this idealized mass is called "point mass". (III) Term "point mass" is a relative term. It has meaning only with respect to a reference frame and with respect to the kind of motion that we analyse. Examples : 1. To analyse the motion of Earth with respect to Sun, Earth can be treated as a point mass. 2. If we throw an IRREGULAR object like a SMALL stone in the air, to analyse its motion, it is simpler to consider the stone as a point mass as it moves in space. |
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