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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
- If the dipole moment of a short bar magnet is 1.25 A-m², the magnetic field on its
- A circuit contains an ammeter, a battery of 30 V and a resistance 40.8 ohm
- A nucleus of mass number 220, initially at rest, emits an α-particle. If the Q-value
- A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5).
- Weight of a body of mass m decreases by 1% when it is raised to height h
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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