Compound lever shears cut through a piece of wire at A (Figure P5.32).

(a) By using the free body diagram of handle CD, determine the magnitude of the force at rivet D.

(b) Referring to the magnifi ed cross-sectional drawing of the connection at D, determine the shear stress in the rivet.

(c) If the rivet is formed from 4340 steel alloy, what is the factor of safety?

Figure P5.32

80 N 25 mm 110 mm D BCE 3 mm 80 N Detail of connection D D