3. 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 one rupees coin.
Explain.
Answers
Answer:
(a) A stone of the same size as rubber ball has more mass. As mass is a measure of inertia, therefore, stone has more inertia than a rubber ball. (b) A train has greater inertia than a bicycle, because train is much heavier than a bicycle.
Answer:
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.