A heavy block suspended by an elastic spring of negligible mass produces an extension of 12 cm when it is in equilibrium. When a length of one fourth of the spring is cut off and the remaining three-fourths length is used to suspend the block the extension in cm, when the block is in equilibrium is

Engineering

Physics

Elasticity

Question

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Mg = k₁x₁ .........(1)
Mg = k₂x₂ .........(2)
∴ x₂ = $\frac{k_{1} x_{1}}{k_{2}}$
k₁ = k ; k₂ = $\frac{4}{3}$ k

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