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betel
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Does your robot have to come up after exactly 2.5 mins, or after 2.5 or 2.5 at latest?
Calculating Force to Lift Cuboidal Object in Water: 1.1 Kg
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Discussion Overview
The discussion revolves around calculating the force required to lift a cuboidal object weighing 1.1 kg submerged in water, considering its buoyancy and the role of electric motors in this process. Participants explore both theoretical and practical aspects of the problem, including the impact of friction, drag, and alternative lifting mechanisms.
Discussion Character
- Exploratory
- Technical explanation
- Practical application
- Debate/contested
- Experimental/applied
Main Points Raised
- One participant calculates the volume of the object and suggests that the motors need to lift either the full weight or the weight minus the buoyant force, leading to confusion about the exact force required.
- Another participant emphasizes that as the object rises, the water displaced does work on the object, potentially reducing the force needed from the motors.
- Some participants propose that friction should be considered in practical calculations, suggesting methods to estimate the work needed.
- There is a suggestion to use a swim-bladder system or flotation tank to assist in lifting the object, which could simplify the lifting process compared to using motors alone.
- Concerns are raised about the complexity of implementing a flotation system and the engineering skills required for such modifications.
- Participants discuss the importance of using correct units (Newtons instead of kilograms) for force calculations and the need for specific motor characteristics to determine lifting capabilities.
- One participant mentions the potential use of baking soda for generating lift through a chemical reaction, although this is later dismissed as impractical.
- There is a discussion about the feasibility of using fans or propellers for lifting, with questions about waterproofing and the design of the system.
Areas of Agreement / Disagreement
Participants express differing views on the calculations needed for lifting the object, the role of friction, and the best approach to achieve buoyancy. There is no consensus on the optimal method for lifting the object or the exact force required, indicating ongoing debate and exploration of ideas.
Contextual Notes
Participants highlight the need for specific measurements and conditions, such as the speed of ascent and the characteristics of the motors, which remain unspecified. The discussion also reflects varying levels of understanding regarding the application of physics principles in practical scenarios.
Who May Find This Useful
This discussion may be useful for individuals interested in robotics, underwater engineering, or those exploring buoyancy and force calculations in practical applications.
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