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Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2v at any instant, then the speed of centre of mass of the system will be:
Options
(a) 2v
(b) zero
(c) 1.5
(d) v
Correct Answer:
zero
Explanation:
If no external force actson a system of particles, the centre of mass remains as rest. So, speed of centre of mass is zero.
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Topics: Motion of system of Particles and Rigid Body
(73)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- To demonstrate the phenomenon of interference, we require two sources which emit
- The atomic number of the most common element in nuclear fusion is
- A man goes 10 m towards north, then 20m towards east, the displacement is
- A layer of glycerine of thickness 1 mm present between a large surface area of 0.1 m².
- If the series limit of Lyman series for hydrogen atom is equal to the series limit
Topics: Motion of system of Particles and Rigid Body (73)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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