Inclined Plane with Friction Simulation

On a slope of angle θ, a block's weight mg splits into mg sin θ down the slope and mg cos θ into it. The slope pushes back with N = mg cos θ, so the normal force is less than the weight. Friction acts along the slope: static friction matches whatever is needed to keep the block still, up to μₛN, and once it slides, kinetic friction μₖN opposes the motion.

This inclined plane simulation draws every force on the block from those rules — weight and its components, normal force, friction and an optional push along the slope — and lets the block move when they do not balance. Tilt the slope slowly and the block slips at the angle of repose, tan θ = μₛ, whatever its mass. The readouts show the friction actually acting next to its limit, so you can see static friction adjust itself.