System of Particles and Rotational Motion - Result Question 13

13. A wheel has angular acceleration of 3.0rad/ sec2 and an initial angular speed of 2.00rad/ sec. In a time of 2sec it has rotated through an angle (in radian) of

(a) 10

(b) 12

(c) 4

(d) 6

[2007]

Show Answer

Answer:

Correct Answer: 13. (a)

Solution:

  1. (a) Since, θ=ω0t+12αt2

Where α is angular aceleration, ω0 is the initial angular speed.

t=2s

θ=2×2+12×3(2)2=4+6=10rad



NCERT Chapter Video Solution

Dual Pane