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Standard XII

Physics

Work Energy Theorem

A block of ma...

Question

A block of mass 2 kg is moving 'Niff a velocity 10 m/s from B towards A The block will press against a light spring of K = 200 N/m which is fixed at one end. Surface to left of B is frictionless but surface to the right Of B is rough with $μ$ = 0.3. Then
The maximum compression of the spring will be

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0.5 m

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0.8 m

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Solution

The correct option is A 1m
$\begin{matrix} \frac{1}{2} K x^{2} = \frac{1}{2} m {v_{o}}^{2} \Rightarrow 200 \times x^{2} = 2 \times 100 \Rightarrow x^{2} = 1 x = 1 m \end{matrix}$
Hence,
option $A$ is correct answer.

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A block of mass 2 kg is moving 'Niff a velocity 10 m/s from B towards A The block will press against a light spring of K = 200 N/m which is fixed at one end. Surface to left of B is frictionless but surface to the right Of B is rough with μ = 0.3. Then The maximum compression of the spring will be

The correct option is A 1m12Kx2=12mvo2⇒200×x2=2×100⇒x2=1x=1mHence,option A is correct answer.

The correct option is A 1m
$\begin{matrix} \frac{1}{2} K x^{2} = \frac{1}{2} m {v_{o}}^{2} \Rightarrow 200 \times x^{2} = 2 \times 100 \Rightarrow x^{2} = 1 x = 1 m \end{matrix}$
Hence,
option $A$ is correct answer.