1.

For a particle executing S.H.M. the displacement x is given by \[x=A\cos \omega t\]. Identify the graph which represents the variation of potential energy (P.E.) as a function of time t and displacement x                      [IIT JEE (Screening) 2003]

A.            I, III                                          
B.            II, IV
C.            II, III                                         
D.            I, IV
Answer» B.            II, IV


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