Question

Which of the following has more inertia: a) a rubber ball and a stone of the same size? b) a bicycle and a train? c) a five rupees coin and a one rupee coin? justify your choices

Answer 1

Inertia:

Inertia is that property of a body due to which it resists a change in its state of rest or of uniform motion.

The inertia of a body depends on its mass.

If an object has more mass it has more inertia.

Heavier objects have more inertia than lighter objects.

a)
A stone has more inertia than a rubber ball of the same size because it has more than a rubber ball of the same size.

b)
A train has more inertia than a bicycle because it has more mass than a bicycle.

c)
A 5 rupee coin has more inertia than a 1 rupee coin because it has more mass than one rupee coin.

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Hope this will help you....

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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