Answer:
a = 50.26 rad/s^2
Explanation:
We know that:
θ =
where θ is the angle, a the angular aceleration and t the time.
First, we need to find how many rad are equivalent to 4 rev, as:
θ = 4 rev * 2π = 25.13 rad
Finally, replacing θ by 25.13 rad and t by 1 second, we get:
25.13 rad =
Solving for a:
a = 50.26 rad/s^2