State the effect produced by a force in the following cases :
(a) The sling of a rubber catapult is stretched
(b) A man pushes a heavy cart
(c) A player uses his stick to deflect the ball .
(d) A cyclist applies brakes
(e) A spring is compressed.

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Solution

(a) The shape and size of catapult changes i.e., its length increases.
(b) The heavy cart begins to move.
(c) The direction of the ball changes.
(d) The speed of the moving cycle is slowed down.
(e) There is change in size and shape of spring.

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Similar questions

Group ‘A’	Group ‘B’
(i) An ox pulling a cart	(a) Magnetic force
(ii) Lifting a heavy iron object with a crane	(b) Electrostatic force
(iii) Weighing with a spring balance	(c) Muscular force
(iv) Applying brakes to a bicycle	(d) Gravitational force
(v) Picking up pieces of paper with a plastic scale	(e) Frictional force

What kind of energy is possessed by the following ?

(a) A stone kept on roof-top

(b) A running car.

(d) A compressed spring.

(e) A stretched rubber band.

Name the type of energy (Kinetic or potential) possesed by the following :

(a) A moving cricket ball.

(b) A stone at rest on the top of a building

(d) A moving bus.

(e) A bullet fired from a gun.

(f) Water flowing in a river.

(g) A stretched rubber band.

Name the form of energy (kinetic energy K or potential energy U) possessed in the following cases:

(a) A moving cricket ball

(b) A compressed spring

(d) A stretched wire

(e) An arrow shot out of a bow

(f) A piece of stone placed on the roof.

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