Free-Fall Apparatus with Negative Pressure and Self-Resetting Mechanism
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Solution Overview
Problem
Existing free-fall experimental apparatuses for high school physics suffer from inaccuracies in calculating free-fall acceleration due to non-zero initial velocity of the experimental ball and cumbersome height adjustment processes, making repeated experiments inefficient.
Innovation Solution
A free-fall experimental apparatus featuring a base with a negative pressure assembly, height adjusting assembly, and self-resetting mechanisms to ensure zero initial velocity and simplify height adjustments, utilizing a pulling type movable assembly, sensing assembly, and retractable components for precise measurement and automatic resetting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If an electric actuator is used to release the experimental ball, then the release mechanism can be automated, but the pallets gradually separate from the ball causing non-zero initial velocity and affecting measurement accuracy
Solution Approach 1:
The patent extracts the release function from the electric actuator system and implements it through a pure mechanical latch mechanism. The latch holds the ball in position and releases it through a simple mechanical action that ensures zero initial velocity, separating the release function from the automated actuator system that causes gradual separation and non-zero initial velocity.
Solution Approach 2:
Instead of using an electric actuator that gradually releases the ball, the patent inverts the approach by using a mechanical latch that holds the ball firmly and releases it instantly through a defined mechanical action. This inversion ensures the ball starts from rest (zero initial velocity) rather than being gradually released with increasing velocity.
2Adaptability or versatility
If manual height adjustment is used for repeated experiments, then the apparatus can be reconfigured, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The patent implements a dynamic height adjustment mechanism where the experimental assembly can be easily moved up and down along the support structure. This dynamic system allows quick reconfiguration for different drop heights without manual handling of the ball and apparatus, significantly reducing the time required for repeated experiments while maintaining adaptability.
Solution Approach 2:
The apparatus is designed with self-adjusting capabilities where the height modification is achieved through a simple mechanism that allows the experimental assembly to be repositioned independently, eliminating the need for complex manual adjustment procedures and reducing the time loss in repeated experiments.
3Productivity
If the experimental ball is repeatedly picked up and height is adjusted manually, then repeated experiments can be performed, but the process is cumbersome and inefficient
Solution Approach 1:
The patent segments the apparatus into distinct functional modules: a fixed support structure, a movable experimental assembly containing the ball, and a separate height adjustment mechanism. This segmentation allows the experimental assembly to be independently adjusted to different heights and released without manually handling the ball, improving both productivity and ease of operation for repeated experiments.
Solution Approach 2:
The experimental assembly is designed with dynamic positioning capabilities, allowing it to be easily moved between different height positions and released through a consistent mechanism. This dynamic design eliminates the cumbersome manual picking up and height adjustment process, making repeated experiments efficient and easy to perform.
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
Ensures accurate calculation of free-fall acceleration by maintaining zero initial velocity and streamlines the experimental process by allowing automatic resetting and single-height adjustment, enhancing the convenience and efficiency of repeated experiments.
Implementation Method 1
a base, said base being fitted with a negative pressure assembly for negative pressure pumping within an experimental assembly
Implementation Method 2
Free-fall experiment is one of the important experiments in high school physics study, which is a uniformly accelerated linear motion with zero initial velocity
Implementation Method 3
calculate the acceleration of free-fall motion
Data Source
AI summary
A free-fall experimental apparatus for high school physics is disclosed. The apparatus includes a base, said base being installed with a negative pressure component for negative pressure pumping within the experimental assembly; said base being installed with a height adjustment component for adjusting the experimental height of the experimental assembly; said base being installed with an experimental assembly for conducting a free-fall experiment; said experimental assembly comprising a pulling type movable assembly, an experimental block, an upper opening self-resetting assembly, a retractable assembly and a lower opening self-resetting assembly.