Question

Q.5 State the name of the object which has more inertia :
(a) A rubber ball and a stone of the same size
(b) An empty box and another similar box filled with clothes.​

Answer 1

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 2

Answer:

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(a) (i) Stone. (ii) Box filled with clothes.

(i) Because this is done to prevent luggage from falling when the vehicle is suddenly stopped or started because due to inertia the luggage will experience a je-rk in a direction opposite to the direction of vehicle.

(ii) Because on shaking, branch comes to state of motion and leaves which are in state of rest experience a je-rk due to which these get detached and fall down.

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