Wolfram Demonstrations Project

In this Demonstration, you can add several forces in the same plane to find the resultant force

. You can modify a force's magnitude (in newtons N) and direction

To find the resultant force in polar coordinates

, first sum the components of the forces in Cartesian coordinates

and

. If there are

forces

, where

, let

and

. Then the magnitude of the resultant is

and its angle is

Contributed by: Enrique Zeleny

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Resultant of a Sum of Forces