Question: The compound shears are used to cut metal parts. Determine the vertical cutting force exerted on the rod R if a force F is applied

The compound shears are used to cut metal parts. Determine the vertical cutting force exerted on the rod R if a force F is applied at the grip G. The lobe CDE is in smooth contact with the head of the shear blade at E.

Given:

F = 20 lb

a = 1.4 ft

b = 0.2 ft

c = 2 ft

d = 0.75 ft

e = 0.5 ft

f = 0.5 ft

g = 0.5 ft

h = 2.5 ft

θ = 60 deg

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