As shown on the right, a uniform boom with a mass of 30.0 kg and a length of 2.00 meters is suspended at its left end by a low friction bearing and supported at its right end by a low mass horizontal steel wire of diameter 4.00 mm. A 20.0 kg mass is suspended from the far end of the boom. Given: Ysteel = 2.00 x 1011 Pa
A. Find the tension in the horizontal cable.
B. By how much did the cable stretch after it was initially attached to the boom?