| ⇦ | 
| ⇨ |
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 velocity of a particle at an instant is 10 ms⁻¹.After 3 s its velocity will become
- Two radiations of photons energies 1 eV and 2.5 eV, successively
- Which of the following does not increase regularly?
- The purpose of using heavy water in nuclear reactor is
- A mass m moves in a circle on a smooth horizontal plane with velocity v₀
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 velocity of a particle at an instant is 10 ms⁻¹.After 3 s its velocity will become
- Two radiations of photons energies 1 eV and 2.5 eV, successively
- Which of the following does not increase regularly?
- The purpose of using heavy water in nuclear reactor is
- A mass m moves in a circle on a smooth horizontal plane with velocity v₀
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