What is the experiment to explore the condition of lever balance?

The experiment to explore the conditions of lever balance is to explore the conditions of lever balance. Experimental steps: support the middle point of the lever on the iron frame, and adjust the balance nuts at both ends of the lever to make the lever balance in the horizontal position. The purpose of doing this is to read the force arm value directly on the lever, and the experimental data can only be recorded after the lever is balanced in the horizontal position during the study.

Hang the hook code on both sides of the lever respectively, and change the position or number of the hook code to keep the lever in a horizontal position. The data to be recorded are power, force arm, resistance and resistance arm. Hang the hook code on the lever, pull the lever vertically upward with a dynamometer at the same side of the fulcrum, repeat the experiment and record the data. It is necessary to change the size, direction and action point of the lever many times and carry out many experiments to get the general physical laws.

The content of lever balance

The balance condition of lever is that when lever is balanced, power multiplied by power arm equals resistance multiplied by resistance arm. If the power and resistance are on different sides of the fulcrum, the two forces are in the same direction; if the power and resistance are on the same side of the fulcrum, the two forces are in opposite directions.

Note that in the experiment, we must first determine which force is power and which is resistance. The experiment must respect the experimental data, and can't tamper with the experimental data at will. The purpose of the experiment is to explore the conditions of lever balance and experimental equipment, such as graduated flat lever, iron frame, spring dynamometer, hook code and thin wire.