Define pressure angle for a cam follower mechanism. Explain its importance in the design of cam profile.
A plate cm drives a radial translating follower with cycloidal motion at 1000 rpm. Rise and return strokes are each 1200 with two equal dwells. Follower is retained against the cam by a compression spring with a scale of 15 N/mm. Spring is compressed by 2.5 mm in assembly to provide an initial load. For a rise of 10 mm and follower mass of 1.8 kg, compute the radial component of the cam force and the cam shaft torque at a point located at 1000 in the ascending stroke.