Question

Which out of the following has more inertia : (a) a five rupee coin or a one rupee coin „ (b) a bicycle or a truck?

Answer 1

Out of the options provided, a five rupee coin and a truck possess more inertia.

Inertia depends upon the mass of the body.

If the mass is more, inertia is more and vice versa.

Thus five rupee coin has more mass than one rupee coin and thus its inertia is also more.

Similar is the case with the truck.

Answer 2

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Inertia is the measure of the mass of the body. The greater is the mass of the body; the greater is its inertia and vice-versa.

(a) Mass of a stone is more than the mass of a rubber ball for the same size. Hence, inertia of the stone is greater than that of a rubber ball.

(b) Mass of a train is more than the mass of a bicycle. Hence, inertia of the train is greater than that of the bicycle.

(c) Mass of a five rupee coin is more than that of a one-rupee coin. Hence, inertia of the five rupee coin is greater than that of the one-rupee coin.

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