A particle of mass $m$ moves with constant speed along a circular path of radius $r$ under the action of force $F .$ Its speed is
- $\sqrt{\frac{Fr}{m}}$
- $\sqrt{\frac{F}{r}}$
- $\sqrt{Fmr}$
- $\sqrt{\frac{F}{mr}}$
The Correct Option is A
Solution and Explanation
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- Transcription
Concepts Used:
Motion in a Plane
It is a vector quantity. A vector quantity is a quantity having both magnitude and direction. Speed is a scalar quantity and it is a quantity having a magnitude only. Motion in a plane is also known as motion in two dimensions.
Equations of Plane Motion
The equations of motion in a straight line are:
v=u+at
s=ut+½ at2
v2-u2=2as
Where,
- v = final velocity of the particle
- u = initial velocity of the particle
- s = displacement of the particle
- a = acceleration of the particle
- t = the time interval in which the particle is in consideration