A top starting from rest is spun for 3 seconds achieving an angular speed of 20 rad/s. How many radians has it gone through in this time? (a is constant)

To calculate the number of radians the top has gone through in 3 seconds, we need to use the formula for angular displacement.

Angular displacement (θ) = Angular speed (ω) * Time (t)

Given that the top achieved an angular speed of 20 rad/s and the time is 3 seconds, we can substitute these values into the formula to find the angular displacement.

θ = 20 rad/s * 3 s

θ = 60 radians

Therefore, the top has gone through 60 radians in 3 seconds.