Adjustable Lever Teaching Tool with Modular Fulcrum Stations

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Solution Overview

Problem

Existing teaching tools for physics, particularly those focused on levers, are limited in the modifications students can make during experiments, restricting the depth of understanding and application of lever principles.

Innovation Solution

A teaching tool comprising a frame with an elongate member that is pivotally or rotatably coupled to a fulcrum, featuring multiple mounting stations and repositories for incremental loads, allowing students to experiment with various lever configurations and balances.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed configuration teaching tool is used, then the structure is simple and easy to manufacture, but the adaptability and versatility are limited

Engineering Contradiction:

Improveability to make modifications during experimentsVSAvoidstructure complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The teaching tool is divided into modular components including an elongate member with multiple mounting stations, a separate fulcrum, and interchangeable weights. This segmentation allows students to assemble different lever configurations by positioning the fulcrum at various mounting stations along the elongate member, thereby achieving high adaptability while keeping each individual component relatively simple in design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The elongate member is designed with multiple mounting stations that can accommodate the fulcrum at different positions, allowing the same component to serve multiple functions in different lever configurations. This universal design enables a single teaching tool to demonstrate various lever classes and mechanical advantage scenarios without requiring multiple specialized devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple mounting stations are added to the elongate member, then the adaptability increases, but the manufacturing precision requirements increase

Engineering Contradiction:

Improvenumber of configurable positionsVSAvoidmounting station positioning accuracy

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The mounting stations are pre-positioned at predetermined locations along the elongate member during manufacturing. This preliminary action ensures that the fulcrum, when placed at any mounting station, automatically achieves the correct positioning for accurate lever arm measurements, eliminating the need for students to perform precise measurements and adjustments during experiments.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The mounting stations are designed with features such as notches or engagement mechanisms that automatically position and secure the fulcrum when placed upon them. This self-service design ensures consistent, accurate positioning without requiring additional adjustment mechanisms or complex alignment procedures, thereby maintaining manufacturing feasibility while achieving precise positioning.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If repositories for incremental loads are included, then the ease of operation improves, but the device complexity increases

Engineering Contradiction:

Improveconvenience of adding loadsVSAvoidnumber of components

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The repositories for incremental loads are integrated directly onto the elongate member as built-in features rather than separate external components. This merging of the load storage function into the existing elongate member structure provides ease of operation by keeping weights readily accessible and easily attachable, while avoiding the added complexity of separate load storage mechanisms.

Inventive Principle:

Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables students to explore and understand lever principles more comprehensively by allowing adjustable configurations and balanced experiments with incremental loads, enhancing their learning experience.

Implementation Method 1

The elongate member is pivotally or rotatably coupled to a fulcrum defined by the frame

Methodology Applied

Scientific EffectRotation:

Implementation Method 2

the first repository is sized and shaped to retain one or more incremental loads (e.g., balls, stones, bean bags, or other weights)

Methodology Applied

Scientific EffectGravitation: Gravitation

Data Source

PatentUS11295633B2Lever system as a teaching tool

Publication Date: 2022.04.05 PROPHET CORP

AI summary

A lever system teaching tool includes a frame and an elongate member that is releasably coupled to the frame. The elongate member defines a plurality of mounting stations along its length. The elongate member can be pivotally or rotatably coupled to the fulcrum of the frame at any of the mounting stations. The elongate member includes repositories at opposite ends of the elongate member. The repositories are sized and shaped to retain one or more incremental loads.