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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
- A toroid having 200 turns carries a current of 1 A. The average radius of the toroid
- The excess pressure inside one soap bubble is three times that inside a second soap bubble
- Two equal and opposite charges of masses m₁ and m₂ are accelerated
- The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field
- A transformer of 100% efficiency has 200 turns in the primary coil and 40000 turns
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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