Discussion Overview
The discussion revolves around alternative methods for achieving sinusoidal vertical movement of a thin box, specifically in the context of a school physics competition. Participants explore various mechanical solutions beyond the use of a cam, considering factors such as frequency, amplitude, and budget constraints.
Discussion Character
- Exploratory
- Technical explanation
- Debate/contested
- Homework-related
Main Points Raised
- One participant suggests using a jigsaw or reciprocating saw as an alternative method.
- Another proposes a linear actuator for precise control over frequency and amplitude, noting it may be expensive.
- A participant questions the budget and specific requirements, indicating that a linear actuator could meet the needs but at a higher cost.
- Concerns are raised about the feasibility of achieving 5cm amplitude at 10Hz, with a participant calculating that this would result in high acceleration, potentially damaging the box.
- A clarification is made regarding the box's material and weight, which is a thin perspex box weighing about 500g.
- One participant calculates the maximum acceleration for the proposed parameters and discusses the limitations of using a cam to keep acceleration below 1G.
- A suggestion is made to consider using a bicycle crank as a mechanical solution.
Areas of Agreement / Disagreement
Participants express varying opinions on the best method to achieve the desired movement, with no consensus on a single solution. Concerns about the structural integrity of the box at higher frequencies and amplitudes are shared, indicating a general agreement on the need for careful consideration of these factors.
Contextual Notes
Participants discuss the limitations of different methods based on the physical properties of the box and the mechanical solutions proposed. There are unresolved considerations regarding the maximum allowable acceleration and the implications for the box's design.
Who May Find This Useful
Individuals interested in mechanical design, physics competitions, or those exploring alternative methods for creating controlled motion in experimental setups may find this discussion relevant.