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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: - A capacitor of 10 µF charged upto 250 volt is connected in parallel with another
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
- A spherical drop of capacitance 1μF is broken into eight drops of equal radius.
- A dip needle vibrates in a vertical plane perpendicular to magnetic meridian. The time
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Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A capacitor of 10 µF charged upto 250 volt is connected in parallel with another
- There is a ring of radius r having linear charge densityλ and rotating with a uniform
- A spherical drop of capacitance 1μF is broken into eight drops of equal radius.
- A dip needle vibrates in a vertical plane perpendicular to magnetic meridian. The time
- A step down transformer is used on a 1000 V line to deliver 20 A at 120 V
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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