About the Same Force, Different Point: The Sign of a Moment simulation
A moment is not a property of a force by itself — it belongs to a force and a chosen point together. This 3D moment of a force simulation puts a single force on a plate with three marked points, A, B and C. Tap each one and the same force gives a different moment, and even a different sign: anticlockwise about one point, clockwise about another. The moment arm (the perpendicular from the point to the line of action) and a curved arrow showing the sense update as you go.
Drag a pivot along the bottom edge and the moment traces a straight line on the graph, crossing zero exactly where the edge meets the force's line of action — press On the line of action to jump there. Then press Pin it here: the plate is pinned at that point and released, and it really turns the way the sign says, or not at all on the line of action. The last module is a spanner pulled at an angle, where only F sin θ turns the nut. A lab for Class 9 turning effect up to JEE torque.
Also covers: moment of a force, torque about a point, sign of torque, clockwise anticlockwise moment, line of action, moment arm, perpendicular distance, torque r cross f, pivot point, torque wrench, class 9 turning effect, class 11 rotational motion, jee torque.
