1. What is Mechanical Advantage?

Definition: Mechanical Advantage (MA) measures how much a simple machine multiplies the input force.

Purpose: It helps us understand how simple machines like levers, pulleys, and ramps make work easier.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( MA \) — Mechanical Advantage (no units)
• \( F_{out} \) — Output force (Newtons, N)
• \( F_{in} \) — Input force (Newtons, N)

Explanation: If MA > 1, the machine makes work easier. If MA = 1, it just changes direction. If MA < 1, it increases distance/speed.

3. Examples of Simple Machines

Details: Common simple machines include:

• Lever (MA depends on fulcrum position)
• Pulley (MA depends on number of ropes)
• Inclined plane (MA depends on slope)
• Wheel and axle
• Wedge
• Screw

4. Using the Calculator

Tips: Enter the output force (what the machine lifts) and input force (what you push/pull). Both must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What does MA = 2 mean?
A: It means the machine makes the force 2 times stronger (but you move the input 2 times farther).

Q2: Can MA be less than 1?
A: Yes! Some machines increase speed/distance instead of force.

Q3: How do I measure forces?
A: Use a spring scale to measure both input and output forces.

Q4: What's a real-world example?
A: A seesaw (lever) with fulcrum in the middle has MA=1. Move the fulcrum closer to the load for MA>1.

Q5: Why no units for MA?
A: Because it's a ratio of two forces (N/N), the units cancel out.