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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) 12
(c) 4
(d) 6
Correct Answer:
10
Explanation:
Since, θ = ?￢ﾂﾀt + 1/2 αt²
Where, α is angular acceleration, ?￢ﾂﾀ is the initial angular speed. t = 2s
θ = 2 x 2 + 1/2 x 3(2)² = 4 + 6 = 10 rad
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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
- When an α-particle of mass m moving with velocity ν bombards on a heavy nucleus
- The ratio of speed of an electron in ground state in Bohr’s first orbit of hydrogen atom
- A thin rod of length L and mass M is bent at its midpoint into two halves
- A particle free to move along X-axis has potential energy given as U(X) =k(1-e⁻ˣ²)
- The threshold frequency for a metallic surface corresponds to an energy of 6.2 eV,
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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