In the situation identify the agent exerting the force and the object on which it acts. State the effect of the force in each case.
A load suspended from a spring while its other end is on a hook fixed to a wall.

In the situation identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. Taking out paste from a toothpaste tube.

In the situation identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. Squeezing a piece of lemon between the fingers to extract its juice.

In the situation identify the agent exerting the force and the object on which it acts. State the effect of the force in each case. An athlete making a high jump to clear the bar at a certain height.

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

spring of force constant k clamped rigidly at onoe end and a mass m attached to its free end. A force F applied at the free end stretches the spring. Figure shows the same spring with both ends free and attached to a mass m at either end. Each end of the spring in figure is stretched by the same force F. (a) What is the maximum extension of the spring in the two cases ? (b) If the mass in figure and the two masses in figure are released free, what is the period of oscillation in each case?

A ball of mass m is attached to the lower end of a light vertical spring of force constant K . The upper end of the spring is fixed. The ball is released from rest with the spring at its normal ( unstretched ) length, and comed to rest again after descending through a distance x .