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A wheel has angular acceleration of 3.0 rad/sec² and an initial angular speed of 2.00 rad/sec. In a time of 2 sec it has rotated through an angle (in radian) of
Options
(a) 10
(b) 2
(c) 4
(d) 6
Correct Answer:
10
Explanation:
Given: Angular acceleration, α = 3 rad/sec², Initial angular velocity ωᵢ = 2 rad/sec, Time t = 2 sec
Using, θ = ωᵢt + (1/2) αt²
.·. θ = 2 x 2 + (1/2) x 3 x 4 = 4 + 6 = 10 radian
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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
- The work function for metals A,B abd C are respectively 1.92 eV,2.0 eV and 5 eV.
- An inductor 20 mH, a capacitor 50 μF and a resistor 40Ω are connected in series
- A lens having focal length f and aperture of diameter d forms an image of intensity I
- The current through an inductor changes from 3 A to 2 A is 1 m/s. If induced e.m.f.
- Sodium has body centred packing. Distance between two nearest atoms is 3.7 Å.
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
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