# Calculate torque for a cam

How do you calculate the torque on the cam, with a force placed on the follower?

Two possibilities:

1. Linear cam (schematic)  • You have to state the speed of the cam, esp. if could it cause follower lift off (due to inertia) as that will effect the calculation. Apr 15 '17 at 20:32
• @PaulUszak The speed of the cam is "v", I am looking for a general solution, hence a symbolic expression. Apr 16 '17 at 5:44
• Well you could start with a simple statics vector problem using the shallowest incident angle onto the follower and assume a friction less system. Your major problem will be the friction on the cam holder in the first question. Where's the applied force in the second question? Apr 16 '17 at 12:59
• @PaulUszak Could you explain a bit further your though on the shallowest incident angle ? Concerning your questions: The images are only schematic. I am assuming no friction, and for the second camholder, you can imagine a torsional spring attached to the follower, which acts as a counter-force.... but my goal here is not to be specific, I would like to have a general formulation (vector based, if possible). Apr 16 '17 at 13:31 