| ⇦ | 
| ⇨ |
Two bodies of mass 1 kg and 3 kg have positive vectors i + 2j + k and -3i -2j + k respectively. The centre of mass of this system has a position vector:
Options
(a) -2i – j + k
(b) 2i – j – 2k
(c) -i + j + k
(d) -2i + 2k
Correct Answer:
-2i – j + k
Explanation:
The position vector of othe centre of mass of two particle system is given by
R⃗ = m₁R⃗₁ + m₂R⃗₂ / (m₁ + m₂)
= 1/4 [-8i -4j + 4k] = -2i -j + k
Related Questions: - The height of the dam, in an hydroelectric power station is 10 m. In order to generate
- A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
- A siren emitting sound of frequency 800 Hz is going away from a static listener
- A long horizontal rod has a bead which can slide long its length
- The unit of electric permittivity is
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 height of the dam, in an hydroelectric power station is 10 m. In order to generate
- A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰
- A siren emitting sound of frequency 800 Hz is going away from a static listener
- A long horizontal rod has a bead which can slide long its length
- The unit of electric permittivity is
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