Description: A sturdy lever build demonstrates force amplification and safe operation.
Objective
Design a safe lever device and measure force gain.
Materials
- Wood base, metal arm and axle
- Springs, screws, washers
- Protective shield
Procedure
1. Assemble lever with fixed fulcrum and return spring.
2. Measure input vs. output force using a spring scale.
3. Add guards and instructions for safe demo use.
4. Explain mechanical advantage using distances from fulcrum.
Conclusion
Lever geometry sets how much effort translates into output force.
