The rigid metal strip of negligible weight is used as part of an electromagnetic switch. If the stiffness of the springs at A and B is k, and the strip is originally horizontal when the springs are unstretched, determine the smallest force needed to close the contact gap at C.

Units Used:

mN 10−3 = N

Given:

a = 50 mm

b = 50 mm

c = 10 mm

k = 5N/m

Transcribed Image Text:

a k B k