1.

A ball of mass 2 kg hanging from a spring oscillates with tiem period 2pi seconds. Ball is removed when it is equilibrium position, then spjring shortens by what length?

Answer»

Solution :`T=2pisqrt(m/k)`
`:.k=(4pi^(2)m)/(T^(2))=((4pi^(2))(2))/((2)^(2))`
Now `MG=kx_(0)`
`:.x_(0)=(mg)/k=(2xxg)/2=g` metre or 10 m


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