1.

For a simple pendulum, a graph is plotted between itskinetic energy `(KE)` and potential energy `(PE)`against its displacement `d`. Which one of the following represents these correctly? (graph are schematic and not drawn to scale)A. B. C. D.

Answer» Correct Answer - B
A simple pendulum performs simple harmonic motion. For simple harmonic motion.
Potential energy goes as `(1)/(2) m omega^(2)x^(2)`
The maximum potential energy being `(1)/(2) m omega^(2) A^(2)`. Kinetic energy goes as `(1)/(2)m omega^(1) (A^(2) - x^(2))`.
Graph (2) fits these plots.


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