Question

In the following situations identify the agent exerting the force and the

object on which it acts. State the effect of the force in each case.

(a) Squeezing a piece of lemon between the fingers to extract its juice.

(b) Taking out paste from a toothpaste tube.

(c) A load suspended from a spring while its other end is on a hook fixed

to a wall.

(d) An athlete making a high jump to clear the bar at a certain height.​

Answer 1

Answer:

(a) In squeezing a piece of lemon, force responsible is muscular force which changes the shape of the lemon and the agent exerting the force is fingers.

(b) In taking out paste from a tube the force changes the shape of the tube and the agent exerting the force are the hands or fingers.

(c) In suspending a load from a spring while other end is on a hook fixed, the force changes the shape of the spring and the agent exerting the force is the load.

(d) In the high jump by the athlete the force acts on the ground and the ground helps the athlete in jumping. The effect os change in motion and the cause id muscular force or friction force.

Explanation: