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`vecf = vecf_1 + vecf_2`

Enter a value for all fields

The **Force Addition** equation (f = f_{1} + f_{2}) computes the net sum of two orthogonal forces (f_{1} and f_{2}).

**INSTRUCTIONS**: Choose units and enter the following:

- (
**f**) Force 1 (horizontal)_{1} - (
**f**) Force 2 (vertical)_{2}

**Sum of Forces (f):** The calculator returns the sum of the two forces (**f**) in Newtons and the elevation angle (θ) in degrees. However, these can be automatically converted to compatible units via the pull-down menu.

**Net Force:** If two forces are acting in a line, the net force can be computed by adding the magnitude of both forces. This can be applied with vertical forces (trust up and gravity down). **Note:** Negative values can be use for opposing forces.

- Light and Matter(Dr. Benjamin Crowell) Chapter 6.3 Newton's laws in three dimensions.