The oscillation of a body on a smooth horizontal surface is represented by the equation
`X = A cos (omegat)`
which one of the following graph shown correctly the variation a with `t`?

Options

A.
B.
C.
D.

Answer

C

Explanation

Displacement ,` x = A cos (omega t)` (given)
Acceleration , `a= (dv)/(dt) = - A omega^(2) cos (omega t)`

Hence graph c correctly depice the variation of a withh `t`