Work, Power and EnergyHard
Question
For a simple pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displacement d. Which one of the following represents these correctly ? (graphs are schematic and not drawn to scale)
Options
A.
B.
C.
D.
Solution
KE = 
mω2[A2 - d2], downward parabola
PE =
mω2d2, upward parabola.
KE
PE
mω2[A2 - d2], downward parabolaPE =
mω2d2, upward parabola.KE
PE
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