The pendulum of a clock is replaced by a spring-mass system with the spring having spring constant 0.1 N m−1. What mass should be attached to the spring ?
k=0.1 N/m
T=2π √(mk)=2 sec
[Time period of pendulum of a clock = 2 sec ]
So, π2(mk)=1
∴ m=kπ2=0.110
=0.01 kg≈10 gm