Mass of bigger body M=4kg Mass of smaller body m=1kg Smaller mass (m=1kg) executes S.H.M of angular frequency ω=25rad∕s Amplitude x=1.6cm=1.6×10−2 As we know, T=2π√
m
K
or, 2πω=2π√
m
K
or,
1
25
=√
1
K
[∵m=1kg;ω=25rad∕s] or, K=625Nm−1. The maximum force exerted by the system on the floor =Mg+Kx+mg =4×10+625×1.6×10−2+1×10 =40+10+10 =60N