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A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point
Options
(a) The momentum changes by mv
(b) The momentum changes by 2mv
(c) The kinetic energy changes by 1/2 mv²
(d) The kinetic energy changes by mv²
Correct Answer:
The momentum changes by 2mv
Explanation:
The diametrically opposite points, the velocities have same magnitude but opposite directions. Therefore, change in momentum is MV – (- MV) = 2MV.
Related Questions: - Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
- The friction of the air causes a vertical retardation equal to 10%
- Radius of a soap bubble is increased from R to 2R. Work done in this process
- A galvanometer acting as a voltmeter will have
- Which of the following is not a thermodynamical coordinate?
Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Magnetic flux φ (in weber) linked with a closed circuit of resistance 10 Ω varies
- The friction of the air causes a vertical retardation equal to 10%
- Radius of a soap bubble is increased from R to 2R. Work done in this process
- A galvanometer acting as a voltmeter will have
- Which of the following is not a thermodynamical coordinate?
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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