Physics-
General
Easy
Question
For a particle executing SHM the displacement 
is given by 
. Identify the graph which represents the variation of potential energy (PE) as a function of time 
and displacement .
- I, III
- II, IV
- II, III
- I, IV
The correct answer is: I, III
Potential energy is minimum (in the case zero) at mean position (
) and maximum at extreme positions (
). At time 
. Hence, PE should be maximum. Therefore, graph I is correct. Further in graph III, PE is minimum at . Hence, this is also correct.
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