Spring is mounted as shown in figure. By attaching a mass to the free end and pulling side ways, we determine that the force is proportional to the displacement a force of 4N causing a displacement of 0.02 m. We attach a 2kg body to the end, pull it aside through a distance of 0.04m , and then released. Find

How much time is required for the body to move half way into the center from its initial position?

Explanation

As per the question `(A)/(2) = A cos (10 s^(-1)) t`
or `(1)/(2) = cos (10 s^(-1)) t`
`rArr t = (pi)/(30) sec`