The vise shown consists of two members connected by two double-threaded screws with a mean radius of 0.25 in. and pitch of 0.08 in. The lower member is threaded at A and B (μs = 0.35), but the upper member is not threaded. It is desired to apply two equal and opposite forces of 120 lb on the blocks held between the jaws.

(a) What screw should be adjusted first?

(b) What is the maximum couple applied in tightening the second screw?

Transcribed Image Text:

E5 in. 5 in.-