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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 sā»Ā² is
Options
(a) šĀ / 2
(b) šĀ / 4
(c) šĀ / 6
(d) šĀ / 8
Correct Answer:
šĀ / 2
Explanation:
w = 900 x 2Ļ/60 = 30Ļ
Angular Retardation = [final velocity – initial velocity] / time
= (30Ļ – 0)/60 = Ļ/2
Therefore, the angular retardation is Ļ/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
- Coherent sources are those sources for which
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- A parallel plate air capacitor is charged to a potential difference of V volts.
- A step-up transformer operates on a 230 V line and supplies a current of 2 A.
- A radioactive element forms its own isotope after 3 consecutive disintegrations.
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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