1. Using two weights to balance the beam.

1. Start by connecting one 200-g weight to the first hook on the right. Then, connect a 200-g weight to the first hole on the left. If released from rest, the beam should not rotate.
2. Remove the 200-g weight from the left side. Determine using Equation 1 where a 100-g weight would need to be placed to balance the torque from the right side. Place the weight and confirm the prediction.

2. Using three weights to balance the beam.

1. Connect a 100-g weight to the first hook on the right. Place a 100-g weight on the third hook to the right.
2. Determine where to place a 200-g weight on the left side to balance the torques.
3. Determine where to place a 100-g weight on the left side to balance the torques.

3. Using multiple weights to balance the beam.

1. Connect a 200-g weight to the fourth hook on the right side.
2. Using any combination of 100-g and 200-g weights find three ways in which the torque from the right side can be balanced on the left side.
3. With the 200-g weight still connected to the fourth hook on the right side, connect a force scale to the first hook on the left side and pull until it is in equilibrium. Make sure to keep the force scale perpendicular to the beam. Record the force. Do this for each hook on the left side and record the values.
4. With the 200-g weight still connected to the fourth hook on the right side, use a protractor to rotate the beam 30°. Attach the force scale to the third hook on the left and record the force. Repeat for 60°.