Question

The dispalcement of an object attached to a spring and excuting simple harmonic motion is given by `x = 2 xx 10^(-2) cospit` metres. The time at which at maximum speed first occurs is :
A. ` 0.5 s`
B. `0.75 s`
C. `0.125 s`
D. `0.25 s`

Answer 1

Correct Answer - A
`|v| = (2 xx 10^(2-2))(pi)sinomegat`
For `|v|` to be maximum `sinpit = 1`
`pit = (pi)/(2), (3pi)/(2)…….. t = (1)/(2)s `.