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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
- The radius of curvature of the convex face of a plano-convex lens is 12 cm
- A spring balance is attached to the ceiling of a lift.A man hangs his bag on the spring
- The respective speeds of the molecules are 1,2,3,4 and 5 km/s.
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- If X=3YZ², find dimensions of Y if X and Z are the dimensions of capacity
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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