Understanding Mechanical Advantage
Mechanical advantage (MA) is the ratio of the output force (the force the lever applies to the load) to the input force (the force you apply to the lever). It tells you how much easier a lever makes it to lift or move something.
Formula for Lever Mechanical Advantage
MA = Effort Arm Length / Resistance Arm Length
* Effort Arm Length: The distance from the fulcrum (the pivot point) to the point where you apply force.
* Resistance Arm Length: The distance from the fulcrum to the point where the load is applied.
Calculations
1. Find the Resistance Arm Length: Since the lever is 2 meters long and the effort arm is 1.6 meters, the resistance arm is 2 meters - 1.6 meters = 0.4 meters.
2. Calculate the Mechanical Advantage:
MA = 1.6 meters / 0.4 meters = 4
Answer: The mechanical advantage of this lever is 4. This means that for every 1 unit of force you apply, the lever will multiply that force by 4 to lift the load.
