| ⇦ | 
| ⇨ |
A wheel is rotating at 900 rpm about its axis.When the power is cut-off it comes to rest in 1 min.The angular retardation in rad s⁻² is
Options
(a) 𝜋 / 2
(b) 𝜋 / 4
(c) 𝜋 / 6
(d) 𝜋 / 8
Correct Answer:
𝜋 / 2
Explanation:
w = 900 x 2π/60 = 30π
Angular Retardation = [final velocity – initial velocity] / time
= (30π – 0)/60 = π/2
Therefore, the angular retardation is π/2.
Related Questions: - The magnetic susceptibility is negative for
- A particle of mass M is suited at the centre of a spherical shell of same mass and radius
- Under constant pressure, graph between P and 1/V is a
- In a nuclear reactor, the number of U²³⁵ nuclei undergoing fissions per second
- When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The magnetic susceptibility is negative for
- A particle of mass M is suited at the centre of a spherical shell of same mass and radius
- Under constant pressure, graph between P and 1/V is a
- In a nuclear reactor, the number of U²³⁵ nuclei undergoing fissions per second
- When three identical bulbs of 60 W-200 V rating are connected in series to a 200 V
Topics: Motion in Plane (93)
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