Ask Question
25 September, 11:23

A wheel starts from rest and rotates with constant angular acceleration and reaches an anaular speed of 12 rad/s in 3 s. Find (a) the magnitude of the angular acceleration of the wheel and (b) the angle (in radian) through which it rotates in this time.

+5
Answers (1)
  1. 25 September, 11:29
    0
    (a) 4 rad/s^2

    (b) 18 rad

    Explanation:

    w0 = 0, w = 12 rad/s, t = 3 s

    (a) Let α be the angular acceleration.

    w = w0 + α t

    12 = 0 + 3 α

    α = 4 rad/s^2

    (b) Let θ be the angle rotated

    θ = w0 t + 1/2 α t^2

    θ = 0 + 0.5 x 4 x 9

    θ = 18 rad
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “A wheel starts from rest and rotates with constant angular acceleration and reaches an anaular speed of 12 rad/s in 3 s. Find (a) the ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers