contestada

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

Respuesta :

As we know from kinematics

[tex]\theta = w_o *t + \frac{1}{2}\alpha t^2[/tex]

[tex]\theta = 0 + \frac{1}{2}*4*3^2[/tex]

[tex]\theta = 18 radian[/tex]

So it will turn by 18 radian