If the clamping force on the pipe is 900 N, determine the horizontal force that must be...

If the clamping force on the pipe is 900 N, determine the horizontal force that must be applied perpendicular to the handle in order to loosen the screw. The single square-threaded screw has a mean diameter of 25 mm and a lead of 5 mm. The coefficient of static friction is = 0.4. Note: The screw is a two-force member since it is contained within pinned collars at A and B.