Q Q B R OQ=30mm OP=120 mm OR 24 mm rad Nose radius= 3 mm The circular cam rotates uniformly at 600 rev/min and operates a flat footed reciprocating follower. The follower retaining spring is to be designed so that at the beginning of the nose radius the spring force is 10% greater than the value required to hold the follower on the cam and in the full lift position the spring force is 5% greater than the required value. Find the spring stiffness and the spring force in the zero lift position if the total mass of the reciprocating parts is 1.25 kg. Discuss the advantages associated with this type of profile when used at higher speeds and describe how the profile can be modified to overcome these issues.