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JEE Mains · Physics · STD 11 - 13. oscillations
A block of mass \(m\) attached to massless spring is performing oscillatory motion of amplitude \('A'\) on a frictionless horizontal plane. If half of the mass of the block breaks off when it is passing through its equilibrium point, the amplitude of oscillation for the remaining system become \(fA.\) The value of \(f\) is
- A \(\frac{1}{2}\)
- B \(\frac{1}{\sqrt{2}}\)
- C \(1\)
- D \(\sqrt{2}\)
Answer & Solution
Correct Answer
(D) \(\sqrt{2}\)
Step-by-step Solution
Detailed explanation
At equilibrium position \(V _{0}=\omega_{0} A =\sqrt{\frac{ K }{ m }} A....(i)\) \(V =\omega A '=\sqrt{\frac{ K }{\frac{ m }{2}}} A '...(ii)\) \(\therefore \quad A'= \sqrt{2} A\) \(P_{i}=P_{f}\) \(mV_0=\frac m{2} V\)…
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