| ⇦ | 
| ⇨ |
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: - A particle of unit mass undergoes one-dimensional motion such that its velocity varies
- If a solid ball of metal has a concentric spherical cavity with in it if the ball
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- A vertical spring with force constant k is fixed on a table. A ball of mass
- The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain
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
- A particle of unit mass undergoes one-dimensional motion such that its velocity varies
- If a solid ball of metal has a concentric spherical cavity with in it if the ball
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- A vertical spring with force constant k is fixed on a table. A ball of mass
- The voltage gain of an amplifier with 9% negative feedback is 10. The voltage gain
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