Question

Car jacks are constructed like a rhombus. When used to raise a car, the rhombus is seen. If the sides of the rhombus are 13 inches, what is the maximum lenght of the shaft

Answer 1

depends on the mininum the screw can retract. Theoretically, it is zero, so max height is 26inches, at which the rhombus is a line upward, very unstable.