What is the Angular Velocity of an Arm at 45 Degrees?

[TheNextOne21]

Homework Statement

Compute the angular velocity (ω) when the arm reaches 45 degrees

equation = ω^2 = ωi^2 + 2α(Δθ)

α = 196.85

Homework Equations

equation = ω^2 = ωi^2 + 2α(Δθ)

The Attempt at a Solution

2(196.85)(45) ??

what do i use for ωi^2? or is it just 0

 

[rock.freak667]

If they said it is at rest then use zero, if they said nothing, then I'd assume it to be at rest initially.