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.
1. Squeezing a piece of lemon between the fingers to extract its juice.
2. Taking out paste from a toothpaste tube.
3. A load is suspended from a spring while its other end is on a hook fixed to a wall.
4. An athlete making a high jump to clear the bar at a certain height.

Answer 1

(a) Fingers  Lemon Juice is extracted by force. 
(b) Fingers Toothpaste tube Toothpaste coming out by force. 
(c) Load Spring Expansion of spring. 
(d) Athlete  Athlete’s body Athlete jump over the bar.