Question

For a particle executing SHM, the displacement `x` is given by `x = A cos omegat`. Identify the graph which represents the variation of potential energy `(PE)` as a function of time `t` and displacement `x`.

(a) `I, III`
(b) `II, IV` (c ) `II, III`
(d) `I, IV`
A. I, III
B. II, Iv
C. II, III
D. I, IV

Answer 1

Correct Answer - A
`x=Acosomegat`
`U=1/2kx^2=1/2kA^2cos^2omegat`
`t=0`, `U=1/2kA^2`, I is correct
At `x=0`, `U=0`, III is correct