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In which of the following examples of motion, can the body be considered approximately 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 round.
(d) a tumbling break that has slopped off the edge of a table.

DoubtHunt Changed status to publish January 17, 2021