Put a block on an inclined plane, a table or a slope up to 75°, hang a mass from a pulley at the top, or pull the block with a force at an angle. The free-body diagram draws its weight, the normal force, friction and the tension of the rope, all to one scale.
The block stays at rest while static friction can hold it, which on a bare slope means tan θ ≤ μs. Once it slides, kinetic friction acts against the motion: on a frictionless slope it speeds up at g sin θ, and a hanging mass m2 pulls a block m1 along a frictionless table at m2 g / (m1 + m2).
Put a block on a slope, hang a mass over a pulley or pull it with a force, and read its free-body diagram, then save the figure as SVG or PNG. The tool needs JavaScript, because the forces are added in your browser.