A femur with a mass of 2.2 kg has forces applied at the knee and hip as shown Fx=6457 N |F|= 975 N. Assume the COM lies at the midpoint of the femur's length. 9 cm FH 70 51 cm Fk COM W a) Find the resultant force acting on the femur [5 Marks] b) Find the moment about the knee due to FH [4 Marks] c) Which component of FH (x or y component) contributes more to the magnitude of the moment about knee and why do you think that is? [4 Marks]