Question Detail
Question
A turntable rotates through 6 radians in 3 seconds as it accelerates uniformly from rest. What is its angular acceleration?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Using θ = ω0t + (1/2)αt^2, with ω0=0, θ=6 rad, t=3 s. So, 6 = 0 + (1/2)α*(3^2) => 6 = 4.5α => α = 6 / 4.5 ≈ 1.33 rad/s².
Hint
Use the kinematic equation for angular displacement under constant angular acceleration.