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A Lamp on Two Wires
Coplanar Force Resultant: Table, Polygon and Missing Force
Add any number of forces in a plane with a clear component table and a force polygon, or find the force that is missing, that balances the others or that turns the resultant to a wanted direction.
Scalars and Vectors in Statics
What makes force a vector, how vectors are drawn and written, and how free, sliding and fixed vectors differ.
Dot Product Visualizer: Angles and Projections in 3D
See what the dot product means: the angle between two directions and the part of a force along a line, drawn in 3D with its perpendicular part and a right-angle mark.
Cartesian Vectors in 3D: Components and Direction Angles
Describe a force in 3D with i, j, k components, its magnitude, coordinate direction angles and unit vector.
Force Vector Directed Along a Line Using Position Vectors
Write a cable or rope force as a Cartesian vector from the coordinates of two points, using position and unit vectors.
