| ⇦ | 
| ⇨ |
The instantaneous angular position of a point on a rotating wheel is given by the equation θ(t) = 2t³ – 6t². The torque on the wheel becomes zero at
Options
(a) t = 1 s
(b) t = 0.5 s
(c) t = 0.25 s
(d) t = 2 s
Correct Answer:
t = 1 s
Explanation:
When angular acceleration is zero then torque on the wheel becomes zero.
θ(t) = 2t – 6t
dθ / dt = 6t – 12t
= dθ / dt = 12t – 12 = 0
t = 1 s
Related Questions: - Which of the following statement about scalar quantity is true?
- A bullet loses 1/20 of its velocity after penetrating a plank.How many planks
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
- The magnetic flux linked with a coil at any instant t is given by ?, find emf
- Two pendulums A and B are oscillating simultaneously with time period
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
- Which of the following statement about scalar quantity is true?
- A bullet loses 1/20 of its velocity after penetrating a plank.How many planks
- A tuning fork of frequency x produces 4 beats with a source of 256 Hz and 8 beats
- The magnetic flux linked with a coil at any instant t is given by ?, find emf
- Two pendulums A and B are oscillating simultaneously with time period
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