1 hard-shelled chocolate candy
pencil
transparent tape or masking tape
flat, 30 cm rulers
standardized mass, 1 to 2g with a flat side to set on the ruler

(If standardized masses are not available, find the mass of identical, large paper clips.)

Discuss the "center of mass" and its application to the hard-shelled chocolate candy and the calibrated mass prior to conducting the experiment.

1.) zero

2.) Clockwise torques are designated as negative, since the sum of _cw and _ccw equals zero.

3.) Place the candy on the right side of the ruler, and the known mass on the left. Move the mass until the ruler balances on the pencil. Measure from the fulcrum to the center of the known mass, D₁, and from the fulcrum to the center of the candy, D₂.

4.) As such:

5.) Convert mass to weight:

_ccw + _cw = 0

W₁D₁ - W₂D₂ = 0