| ⇦ | 
| ⇨ |
A cockroach is moving with a velocity v in anticlockwise direction on the rim of a radius R of mass m. The moment of inertia of the disc about the axis is I and it is rotating in clockwise direction with an angular velocity ?. If the cockroach stops, the angular velocity of the disc will be
Options
(a) I?/(I+mR²)
(b) (I?+mvR)/(I+mR²)
(c) (I?-mvR)/(I+mR²)
(d) (I?-mvR)/I
Correct Answer:
(I?-mvR)/(I+mR²)
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
Related Questions: - For an ideal gas of diatomic molecules
- The initial rate of increase of current, when a battery of emf 6 V is connected
- The core of a transformer is laminated because
- A round disc of moment of inertia i₂ about its axis perpendicular to its plane
- Two forces of magnitude 8N and 15N respectively act at a point so as to make the resultant force
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
- For an ideal gas of diatomic molecules
- The initial rate of increase of current, when a battery of emf 6 V is connected
- The core of a transformer is laminated because
- A round disc of moment of inertia i₂ about its axis perpendicular to its plane
- Two forces of magnitude 8N and 15N respectively act at a point so as to make the resultant force
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
Since the phenomenon occurs in the absence of external torque, so applying the law of conservation of angular momentum-
I disc ×ω – mvR = (I disc + mR²)×ω`
ω` = Iω – mvR/ I + mR²
Therefore, option c is correct!