🐐 Clockwork Goats: Cam Follower Lift, Acceleration and Pressure Angle (2D)

Side view of a disc cam that pushes a spring-loaded follower, which brings two clockwork goats together to butt heads. Set the base circle, the lift, the rise angle, the cam speed, the follower mass and the spring, and see the lift curve, the acceleration, the contact force, whether the follower leaves the cam and the largest pressure angle against the smallest safe base circle. The cycloidal derivatives, the peak speed and acceleration, the pressure angle limit and the spring energy are checked numerically, with four in-page numerical checks.