1. The problem statement, all variables and given/known data A crate with a mass of 181.5 kg is suspended from the end of a uniform boom. The upper end of the boom is supported by the tension of 2323 N in a cable attached to the wall. The lower end of the boom pivots at the location marked X on the same wall. Calculate the mass of the boom. 2. Relevant equations L - length of boon Ff - friction T - tension Wb - weight of boon W - weight of box net forces in x direction = Ffx - Tx net forces in y direction = Ffy + Ty - Wb - W net torque = Wb(L/2)cos(theta) + WLcos(theta) - TLsin(theta) 3. The attempt at a solution This is what I did exactly: I set up the above equations and then worked with the torque equation setting the tension equal to the weights. I canceled out the L's and reset up the problem so that it was equal to what I wanted to find, Wb. Upon doing that I got this equation: (2Tsin(theta) - Wcos(theta))/cos(theta) = Wb. I eliminated the cos in the denominator and got 2tan(theta) - W = Wb and from there I dervied theta from the graph making a right triangle with the boon as the hypotenuse I took the tangent of 5/9 and got 29.1 for theta and filled that into the equation. However, obviously that didn't get me the right answer, so I'm wondering what I'm doing wrong. Help would be appreciated.