- #1
GoodOldLimbo
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Homework Statement
A conical pendulum has length (L) 1.5m and rotates at 4ms-1. What is it's angle (θ) to the vertical?
Homework Equations
r = Lsinθ
tanθ = v2/Lsinθg
tanθsinθ = v2/Lg
sinθsinθ/cosθ = v2/Lg
sin2θ/cosθ = v2/Lg
sin2θ + cos2θ = 1
The Attempt at a Solution
I've followed the list of equations given:
L = 1.5m
v: 4ms
g: 10ms2 (In our workbook, we usually round it up to 10)
r = 1.5sinθ
tanθ = 42/1.5sinθg
tanθsinθ = 42/1.5 x 10
I get stuck here and I'm not sure how to continue. I get the impression that I've approached this the wrong way entirely :P
Any help? It would be most appreciated.
Thanks