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