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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
- The temperature coefficient of resistance of an alloy used for making resistor is
- A particle doing SHM has amplitude=4 cm and time period = 12 sec. The ratio between times
- Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen
- The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
- A body of mass 2 kg is kept by pressing to a vertical wall by a force of 100 N
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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