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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.
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Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A 50 ohm galvanometer gets full scale deflection when a current of 0.01 A passes
- Which of the following combinations should be selected for better tuning of an L-C-R
- All components of the electromagnetic spectrum in vacuum have the same
- A black body is heated from 27° C to 127° C. The ratio of their energies of radiations
- A body moves with a uniform acceleration a and zero initial velocity
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Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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