The rigid metal strip of negligible weight is used as part of an electromagnetic switch. Determine the maximum stiffness k of the springs at A and B so that the contact at C closes when the vertical force developed there is F. Originally the strip is horizontal as shown.

Units Used:

mN 10− 3 = N

Given:

a = 50 mm

b = 50 mm

c = 10 mm

F = 0.5 N

Transcribed Image Text:

k B C A k