A wheel having a diameter of 3 m starts from rest and accelerates uniformly to an angular…

Physics · JEE Main · NTA ExamsRotational Motion

A wheel having a diameter of 3 m starts from rest and accelerates uniformly to an angular velocity of 210 r.p.m. in 5 seconds. Angular acceleration of the wheel is -
  1. 4.4 \(\frac{\mathrm{rad}}{\mathrm{~s}^{2}}\)
  2. 3.3\(\frac{\mathrm{rad}}{\mathrm{~s}^{2}}\)
  3. 2.2 \(\frac{\mathrm{rad}}{\mathrm{~s}^{2}}\)
  4. 1.1 \(\frac{\mathrm{rad}}{\mathrm{~s}^{2}}\)

Answer

(A) 4.4 rad ~s ^ 2

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