InterviewSolution
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In which of the following examples of motion, can the body be consideredapproximately a point object:(a) a railway carriage moving without jerks between two stations.b) a monkey sitting on top of a man cycling smoothly on a circular track.(c) a spinning cricket ball that turns sharply on hitting the ground.(d) a tumbling beaker that has slipped off the edge of a table. |
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Answer» (a) The size of a carriage is very small as compared to the distance between two stations. Therefore, the carriage can be treated as a point sized object. (b) The size of a monkey is very small as compared to the size of a circular track. Therefore, the monkey can be considered as a point sized object on the track. (c) The size of a spinning cricket ball is comparable to the distance through which it turns sharply on hitting the ground. Hence, the cricket ball cannot be considered as a point object. (d) The size of a beaker is comparable to the height of the table from which it slipped. Hence, the beaker cannot be considered as a point object. |
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