In which of the following examples of motion, can the body be considered approximately
a point object:
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Answer 3.1: [ncert motion in straight line class 11]
(a), (b)
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.
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.
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.
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.
Explanation:
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