Physics-
General
Easy
Question
For a particle executing S.H.M. the displacement x is given by 
. Identify the graph which represents the variation of potential energy (P.E.) as a function of time t and displacement x
- I, III
- II, IV
- II, III
- I, IV
The correct answer is: I, III
Potential energy is minimum (in this case zero) at mean position (x = 0) and maximum at extreme position 
At time t = 0, x = A, hence potential should be maximum. Therefore graph I is correct. Further in graph III. Potential energy is minimum at x = 0, hence this is also correct.
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