(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A nonuniform horizontal bar of mass m is supported by two massless wires against gravity. The left wire makes an angle (phi) with the horizontal, and the right wire makes an angle . The bar has length L.

What is the position of the center of mass of the bar, measured as distance from the bar's left end?

x=?

2. Relevant equations

-F₁ · sin(φ₁) + F₂ · sin(φ₂) = 0

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F₁x = -F₁ · sin(φ₁)

F₁y = F₁ · cos(φ₁)

F₂x = F₂ · sin(φ₂)

F₂y = F₂ · cos(φ₂)

forces in terms of magnitude and angle

x = L / ( (F₁/F₂)·(cos(φ₁)/cos(φ₂)) + 1)

3. The attempt at a solution

x = L / ( (tan(φ₂)/tan(φ₁) + 1)

this seems right, but I'm repeatedly getting it wrong no matter how I input the answer.

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# Homework Help: A Bar Suspended by Two Wires

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