The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds.

The Angular Velocity Of A Wheel Increases From 100 Rps Physics Question

The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds. The number of revolutions made during that time is

Options

(a) 600
(b) 1500
(c) 1000
(d) 2000

Correct Answer:

2000

Explanation:

Assuming constant angular acceleration,
α=2πx300-2πx100/10
=2πx200/10
=40 π radius/s²
ω²f-ω²i=2α.θ
θ=4π²(90000-10000)/2×2πx20
=2π(80000)/40
=2πx2000
.·. Total number of revolutions=2000.

Related Questions:

  1. A cylindrical tank is filled with water to a level of 3m. A hole is opened at a height
  2. A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field
  3. A particle is dropped from a building. It takes 4 sec for the particle to reach the ground
  4. A vertical spring with force constant k is fixed on a table. A ball of mass
  5. If the radioactive dacay constant of radium is 1.07 x 10⁻⁴ year⁻¹, then its half-life

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.

NEETLab Mobile App

Share this page with your friends

1 Comment on The angular velocity of a wheel increases from 100 rps to 300 rps in 10 seconds.

Leave a Reply

Your email address will not be published.


*