The magnitude of the linear velocity of a revolving body is given by:
Correct answer: A. V = r ω
- A. V = r ω
- B. V = r/ω
- C. V =ω/r
- D. V = ω2/r
Explanation
Explanation: From the knowledge of circular motion, we can say that the magnitude of the linear velocity of a particle travelling in a circle relates to the angular velocity of the particle ω by the relation υ/ω= r, where r denotes the radius. At any instant, the relation v/ r = ω applies to every particle that has a rigid body. If the perpendicular distance of a particle from a fixed axis is ri, the linear velocity at a given instant v is given by the relation, Vi = ωri
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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