Work , energy and power questions | form one Physics

List down five forms of energy:

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Figure 1 shows how the bob of a simple pendulum was pulled aside to position A and then realised to position C via position B. At what position will the bob attain maximum kinetic energy?

1. Position A
2. Position B
3. Position C
4. Position D
5. Position E

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What physical quantity is obtained by the ratio of distance moved by effort to the distance moved by the load?

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Study Figure 3 then answer the questions that follow.

(i) Calculate the work done in rising the wooden block from point A to B.
(ii) Briefly explain if it is possible for the wooden block to remain stationary when placed at the mid-point of an inclined plane?

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Briefly explain how each of the following energy transformation takes place:
(i) Mechanical energy to light energy.
(ii) Chemical energy to mechanical energy.

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UNSOLVED