- A Wrecking Ball Weight 5820 N Is Supported By A Boom Which May Be Assumed To Be Uniform And Has A Weight Of 3290 N 1 (401.69 KiB) Viewed 36 times
A wrecking ball (weight -5820 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3290 N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48º. The boom is in static equilibrium (a) Draw a free body diagram for the boom. Assign a coordinate system (x and y axes) and label an axis about which you will calculate the net torque acting on the boom. (b) Write down the Newton's 2nd Law equations for the boom (XFx, Fy, and t). (e) Find the magnitude of the tension in the support cable. Note: this is NOT the same as the weight of the wrecking ball, as this is a different cable from that supporting the ball. (d) Find the magnitude of the force exerted on the lower end of the boom by the hinge at point P. Support cable Boom