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

A 20kg block is held in equilibrium by two massless cords, A, B. A is attached to the wall and B is attached to the ceiling. Find the magnitudes of the tensions of the cords.

Visual: http://i758.photobucket.com/albums/xx228/schuyler2_va/untitled.jpg?t=1260816320

2. Relevant equations

[tex]\Sigma[/tex] Forces = m*a

Normal force = mg(cos [tex]\theta[/tex])

3. The attempt at a solution

[tex]\Sigma[/tex] Forces = Tension of A + Tension of B + W + N

Tensions+Weight = ma

N = mg(cos [tex]theta[/tex])

W = 0

Tension A =?

Tension B=?

^not sure how to find the magnitudes

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# Finding magnitude of the tension of a cord

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