| ⇦ | 
| ⇨ |
If F⃗ is the force acting on a particle having position vector r⃗ and ? ⃗ be the torque of this force about the origin, then:
Options
(a) r⃗ . ? ⃗ > 0 and F⃗ . ? ⃗ < 0
(b) r⃗ . ? ⃗ = 0 and F⃗ . ? ⃗ = 0
(c) r⃗ . ? ⃗ = 0 and F⃗ . ? ⃗ ≠ 0
(d) r⃗ . ? ⃗ ≠ 0 and F⃗ . ? ⃗ = 0
Correct Answer:
r⃗ . ? ⃗ = 0 and F⃗ . ? ⃗ = 0
Explanation:
? ⃗ = r⃗ x F⃗ ⇒ r⃗ . ? ⃗ = 0 and F⃗ . ? ⃗ = 0
Since, ? ⃗ is perpendicular to the plane of r⃗ and F⃗ , hence the dot product of ? ⃗ with r⃗ and F⃗ is zero.
Related Questions: - Consider a uniform square plate of side ɑ and mass m. The moment of inertia
- On observing light from three different stars P, Q and R, it was found that intensity
- What is the amount of energy released by deuterium and tritium fusion?
- The drift velocity of the electrons in a copper wire of length 2 m under
- A concave mirror ia placed over a beaker containing water of
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
- Consider a uniform square plate of side ɑ and mass m. The moment of inertia
- On observing light from three different stars P, Q and R, it was found that intensity
- What is the amount of energy released by deuterium and tritium fusion?
- The drift velocity of the electrons in a copper wire of length 2 m under
- A concave mirror ia placed over a beaker containing water of
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