A pair of large hydraulically operated shears in Figure P4.23 is attached to the end of the

Question:

A pair of large hydraulically operated shears in Figure P4.23 is attached to the end of the boom on an excavator. The shear is used for cutting steel pipe and I-beams during demolition work. Hydraulic cylinder AB exerts an 18-kN force on the upper jaw.

(a) Complete the free body diagram for the upper jaw, which has been only partially drawn.

(b) Determine the cutting force F being applied to the pipe.

Figure P4.23