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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
Related Questions: - An ac voltage is applied to a resistance R and an inductor L in series
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- A body of mass 120 kg and density 600 kg/m³ floats in water.
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Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- An ac voltage is applied to a resistance R and an inductor L in series
- Two blocks of masses m₁=4 kg and m₂= 2kg are connected to the ends of a string
- A body of mass 120 kg and density 600 kg/m³ floats in water.
- A particle of mass m is driven by a machine that delivers a constant power k watts
- A carnot’s engine operates with source at 127° C and sink at 27°C
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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