Question

The displacement - time $(x-t)$ graph of a particle executing simple harmonic motion is shown in figure. The correct variation of net force $F$ acting on the particle as a function of time is

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

Given graph represents $x=\text{A cos}\omega t$
Since, the particle executes simple harmonic motion,
$F\propto -x$
$\therefore F=-\text{KA cos}\omega t$
Hence, option (b) is correct.