2. A large wrecking ball is held in place by two light steel cables. If the mass m of the wrecking ball is 3620 kg, what are (a) the tension TB in the cable that makes an angle of 40° with the vertical and (b) the tension TA in the horizontal cable? XXXXXXXXXX 40° TA m TB

A weight with mass mw = 250 g is tied to a piece of thread wrapped around a spool, which is suspended in such a way that it can rotate freely. When the weight is released, it accelerates toward the floor as the thread unwinds. Assume that the spool can be treated as a uniform solid cylinder of radius R = 3.00 cm and mass Ms 100 g . M, Find the magnitude a of the acceleration of the weight as it descends. Assume the thread has negligible mass and does not slip or stretch as it unwinds. Use g = 9.81 m/s?. m a = mw Find the tension T in the thread.

7. What is the tension in each cable for the equilibrium configuration shown below? Cable A has a -x component, and positive y and z components, cable B is in the +x direction, and cable C has negative x and y components and a +z component. The 1300 N force is acting in the -z direction. +z C 2.0 m A 1.0 m 3.0 m 2.0 m 1.0 m 4.0 m Question #7 B +y +x 1300 N 8. By how much do the two springs stretch in the equilibrium configuration below in order to support the 25 kg mass? Each spring has an unstretched length of 2.2 m and a spring constant of 250 N/m. Spring A is exerting a force in the -y direction. Spring B is exerting a force in the -x direction.

A 200 N sign hangs from the middle of a cable between two buildings. The ends of each cable are attached to each building at the same height. The cable cannot exceed 1500 N without breaking. Find the minimum angle that the cable can make from the horizontal.