Member abcd (the focus of this problem) is supported by a collar at d that can rotate and slide along bar ef, which is fixed and frictionless. structure abcd makes contact with smooth surfaces at a and c where the normal direction n to the surface at alies in a plane that is parallel to the xy-plane. force p is parallel to the y-axis. if p = 10 kn, determine the reactions at a, c and d.

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise