* Lever Action: A lever is a simple machine that uses a rigid bar (the lever arm) to multiply force. It pivots around a fixed point called the fulcrum.
* Rotational Motion: When you apply force to a lever, it rotates around the fulcrum. This movement is arc-shaped, not straight.
* Lever Types: Depending on the placement of the fulcrum, load, and effort, there are three types of levers:
* First Class: Fulcrum is in the middle (like a seesaw).
* Second Class: Load is in the middle (like a wheelbarrow).
* Third Class: Effort is in the middle (like a fishing rod).
In summary, a lever's motion is rotational, not linear. It moves in an arc around the fulcrum.
