Question

The image below shows four configurations for designing a nut cracker. Which option would require the least amount of pressure to break the nut?

• A. A
• B. B
• C. C
• D. D

Hint:

In lever systems, increasing the distance between the fulcrum and effort point maximizes mechanical advantage, reducing the required force.

Answer 1

The Correct Option is C

1. Analysis of Lever Mechanisms:
- The nut cracker functions as a second-class lever, where the fulcrum, effort, and load positions determine the mechanical advantage.
- Mechanical Advantage (MA): A greater distance between the fulcrum and the effort point reduces the required pressure to break the nut.
2. Options Analysis:
- Option A: The effort point is relatively close to the fulcrum, resulting in lower mechanical advantage and requiring more pressure.
- Option B: Similar to \(A\), the lever arrangement results in moderate mechanical advantage, requiring significant pressure.
- Option C: The effort point is farther from the fulcrum, providing the highest mechanical advantage, reducing the required pressure. Thus, \(C\) requires the least amount of pressure.
- Option D: The configuration results in a mechanical advantage lower than \(C\), requiring more pressure than \(C\).
Conclusion: The option requiring the least amount of pressure is \(C\).