Question

A wheel starts at rest, and has an angular acceleration of 4 rad/s2. through what angle does it turn in 3.0 s?

Answer 1

As we know from kinematics

`\theta = w_o *t + (1)/(2)\alpha t^2`

`\theta = 0 + (1)/(2)*4*3^2`

`\theta = 18 radian`

So it will turn by 18 radian