- #121
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Are you absolutely certain? This might be the afterlife.malawi_glenn said:
What is the minimum force required to lift an object?
Click For Summary
Discussion Overview
The discussion revolves around the minimum force required to lift an object, specifically examining the forces involved when a person stands on a scale and exerts additional force to lift themselves. Participants explore concepts of equilibrium, net force, and the implications of Newton's laws and the conservation of energy in this context.
Discussion Character
- Debate/contested
- Technical explanation
- Mathematical reasoning
Main Points Raised
- One participant asserts that to lift an object, the force must be slightly greater than the object's weight, suggesting that a force less than 600 N cannot lift a 60 kg person.
- Another participant challenges this reasoning, indicating that the scale exerts an upward force equal to the weight when at equilibrium and that any additional force applied results in a net upward force that can accelerate the body.
- Some participants discuss the distinction between total applied force and net force, emphasizing that the net upward force must be non-zero for acceleration to occur.
- Concerns are raised about the conservation of energy, with one participant arguing that using a smaller force to lift a weight leads to a violation of energy conservation principles.
- Questions are posed regarding the minimum force needed to lift an object off a surface, with some suggesting that a force greater than the weight is necessary.
Areas of Agreement / Disagreement
Participants do not reach a consensus, as there are competing views on the relationship between applied force, net force, and the implications for lifting an object. Disagreements persist regarding the interpretation of Newton's laws and the conservation of energy in the context of lifting forces.
Contextual Notes
Some participants express confusion over the definitions of net force versus total applied force, and there are unresolved questions about the implications of energy conservation in lifting scenarios. The discussion reflects varying interpretations of fundamental physics principles.
- #122
malawi_glenn
Science Advisor
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MultiverseOrodruin said:
- #123
Yahya Sharif
- 39
- 4
Thanks a lot I appreciate it,malawi_glenn said:
But this is not the idea you should not die you will just feel some pain without belly damage. You will damage your belly if you put a +100 kg rock " equals to your weight" on your belly. Post #109
You lie on the belly " your picture" by +100 kg weight you do not hurt your stomach. You put the same weight as a rock of +100 kg on your belly, that will damage your belly severely. Big different scenarios even though both are of the same mass.
- #124
malawi_glenn
Science Advisor
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The only thing I felt was my quark coming upYahya Sharif said:
Obvious trolling.Yahya Sharif said:
I can go and get a tractor tire of weight ~180 kg and roll it up my stomach. Then you will say it is not good because tractor tires are round or whatever
- #125
Yahya Sharif
- 39
- 4
What does this mean?malawi_glenn said:
- #126
malawi_glenn
Science Advisor
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It is a research paper preprint serverYahya Sharif said:
- #127
Yahya Sharif
- 39
- 4
I made this discovery. I must be one of the authors at least.malawi_glenn said:
- #128
malawi_glenn
Science Advisor
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We will share the Nobel Prize, welcome to Stockholm! You can stand on my belly as much as you want!Yahya Sharif said:
- #129
berkeman
Admin
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Yep. Thread is closed; warning is pending. Everybody have a good day.malawi_glenn said:
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