SYMBOLS

A = follower acceleration, in/sec ²

F = friction force to cam surface, lb

F _a = inertia force, lb

F _k = kinetic friction force, lb

F _n = force normal to cam surface, lb

F _s = static friction force, lb

h = maximum rise of follower, in

I = moment of inertia of body about center of rotation lb-in-sec ²

= radius of gyration, in

k _s = spring index, ib/in

L = external load on cam, lb

L _o = m + L = total load on cam, lb

m = follower mass, lb-sec ²/in

N = normal component of velocity, ips

r = distrance from cam center to roller follower center, in

r _b = base circle radius, in

S = spring force, lb

T = torque, in-lb

T _a = inertia torque, in-lb

T _G = tailgate torque, in-lb

v _S = sliding component of velocity, ips

w = equivalent weight, lb

y = follower displacement, in

= follower velocity, ips

= follower acceleration in/sec ²

? = angular acceleration radians/sec ²

? _p = pressure angle, deg

? = cam angle rotation for rise, h, radians

? = deflection, in

? = coefficient of friction

? = cam angle rotation, radians