- #1
firezap
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Homework Statement
http://i.imgur.com/u8vUv5a.jpg
Find the phase constant.
Homework Equations
x(t)=Acos(ωt + Φ)
v(t)=-Aωsin(ωt + Φ)
Vmax = ωA
ω=2π/T
The Attempt at a Solution
ω = 2π/12 = 0.5236
A = 60/0.5236 = 114.59 cm
v(0) = -30 = -114.59(0.5236)sinΦ
0.5 = sinΦ
Φ = π/6 and 5π/6. Which angle is correct?