The door of an oven has 22 lb weight that acts vertically through point D. The door is sup...

The door of an oven has 22 lb weight that acts vertically through point D. The door is supported by a hinge at point and two springs that are symmetrically located on each side of the door. For the positions specified below, determine the force needed in each of the two springs if the resultant moment about point A of the weight and spring forces is to be zero.

(a) α= 45°.

(b) α = 90°.

(c) Based on your answers to Parts (a) and (b). determine an appropriate stiffness for the springs.

Figure P4.6