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

AI Thread Summary
To compute the angular velocity (ω) of an arm at 45 degrees, the equation ω^2 = ωi^2 + 2α(Δθ) is used, where α is given as 196.85. There is uncertainty regarding the initial angular velocity (ωi), with suggestions that it should be zero if the arm starts from rest. If no initial conditions are specified, it is reasonable to assume ωi is zero. The calculation involves substituting the values into the equation to find ω. The discussion emphasizes the importance of clarifying initial conditions in physics problems.
TheNextOne21
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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
 
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If they said it is at rest then use zero, if they said nothing, then I'd assume it to be at rest initially.
 

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