A spring balance has a scale that reads from 0 to 50 kg. The length of the scale is 20 cm. A body suspended from this spring, when displaced and released oscillates with period of 0.60 s. What is the weight of the body?

A spring balance has a scale that reads from 0 to 50 kg. The length of

1.	A spring balance has a scale that reads from 0 to 50 kg. The length of the scale is 20 cm. A body suspended from this spring, when displaced and released oscillates with period of 0.60 s. What is the weight of the body?
Answer» SOLUTION :Here `m=50kg,` MAX extension `y=20-0=20cm=0.2m,T=0.6s` max FORCE `F=mg=50xx9.8N` `:.k=F/u=(50xx9.8)/0.2=2450Nm^(-1)` there As `T=2pisqrt(m/k),m=(T^(2)k)/(4pi^(2))=((0.6)^(2)xx2450)/(4xx(3.14)^(2))=22.35kg` `:.` Weight of BODY `=mg=22.35xx9.8=219.1N`