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A particle of mass m moves with constant speed along a circular path of radius r under the action of a force F. Its speed is
Options
(a) √rF/m
(b) √F/r
(c) √Fmr
(d) √F/mr
Correct Answer:
√rF/m
Explanation:
The centripetal force is F=mv²/r
.·. v²=Fr/m
The speed is v= √Fr/m
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Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When a ceiling fan is switched off its angular velocity reduces to 50% while
- A stone of mass 1 kg tied to a light inexensible string of length L=10/3 is whirling
- A radioactive element forms its own isotope after 3 consecutive disintegrations.
- One solid sphere A and another hollow sphere B are of same mass and same outer radii.
- An avarage induced e.m.f. of 1 V appears in a coil when the current in it is changed
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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