The pendulum of a clock is replaced by a spring-mass system with the spring having spring constant 0.1 Nm-1. What mass should be attached to the spring?

= 10 g

The, time period of the Pendulum is 2 seconds.

Now, if the pendulum clock will be replaced by the Spring-mass system, the time period will not change


Therefore, m = 0.01 kg. = 10 g.