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A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be:
Options
(a) 2 Mg/k
(b) 4 Mg/k
(c) Mg/2k
(d) Mg/k
Correct Answer:
Mg/k
Explanation:
Restoring force, f’ = – kx. where x is the extension produced in the spring.
Weight of the mass acting downward = Mg.
In equilibrium kx = Mg, x= Mg / k
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Topics: Oscillations
(58)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If a steel wire of length l and magnetic moment M is bent into a semicircular arc,
- A super conductor exhibits perfect
- To convert a 800 mV range millivoltmeter of resistance 40Ω into an ammeter of 100 mA
- In a mass spectrometer used for measuring the masses of ions, the ions
- Three capacitors 3μF,6μF and 6μF are connected in series to a source of 120V.
Topics: Oscillations (58)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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