Answer:
Step-by-step explanation:
(a) Agent exerting the force: Fingers
Object on which it acts: Piece of lemon
Effect of the force: The force applied by squeezing the lemon between the fingers results in the extraction of juice from the lemon.
(b) Agent exerting the force: Hand
Object on which it acts: Toothpaste tube
Effect of the force: The force applied by squeezing the toothpaste tube results in the toothpaste being pushed out of the tube.
(c) Agent exerting the force: Load (weight)
Object on which it acts: Spring
Effect of the force: The weight of the load applies a force on the spring, causing the spring to stretch or compress, depending on the direction of the force.
(d) Agent exerting the force: Athlete's body
Object on which it acts: Bar
Effect of the force: The force applied by the athlete jumping exerts an upward force on their body, allowing them to clear the bar at a certain height.