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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: - A cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s
- A siren emitting sound of frequency 800 Hz is going away from a static listener
- A solid sphere of mass M, radius R and having moment of inertia about an axis passing
- A body covers 200 cm in the first 2 seconds and 220 cm in the next 4 seconds.
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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 cricketer catches a ball of mass 150 g in 0.1 sec moving with speed 20 m/s
- A siren emitting sound of frequency 800 Hz is going away from a static listener
- A solid sphere of mass M, radius R and having moment of inertia about an axis passing
- A body covers 200 cm in the first 2 seconds and 220 cm in the next 4 seconds.
- Two discs of moment of inertia I₁ and I₂ and angular speeds ?￢ﾂﾁ and ?￢ﾂﾂ are rotating
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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