| ⇦ | 
| ⇨ |
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.
Related Questions: - The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
- Height of geostationary satellite is
- A spring of spring constant 5 x 10³ N/m is stretched initially by 5 cm
- Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively
- Work of 3.0×10⁻⁴ joule is required to be done in increasing the size of a soap film
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
- The binding energy per nucleon in deuterium and helium nuclei are 1.1 MeV and 7.0 MeV
- Height of geostationary satellite is
- A spring of spring constant 5 x 10³ N/m is stretched initially by 5 cm
- Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively
- Work of 3.0×10⁻⁴ joule is required to be done in increasing the size of a soap film
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
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply