Question

Which of the diagrams shown in figure represents variation
of total mechanical energy of a pendulum oscillating in air
as function of time?

Answer 1

Explanation:

In the following situations, identify the agent exerting the force. Also, state

the effect of the force in each case.

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

(b) A person diving into a swimming pool.

(c) A labourer moving a loaded cart.

(0) A car coming to rest once its engine is switched off.

An athlete making a high jump to clear a bar kept at a certain height.t.