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Question
Name the type of energy possessed by the bob of a simple pendulum when it is at
- the extreme position,
- the mean position, and
- between the mean and extreme positions.
Solution
- At A extreme position energy possessed is only Potential Energy as bob is at rest at a height h.
- At B mean position energy possessed is only Kinetic as h is zero.
- Given that both are in motion and at a height above ground, the energy held at C, which lies between the mean and the extreme position, is both kinetic and potential.
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(Take g = 10 ms-2, given that there is no loss of energy.)
