Think of an interesting physics problem

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    Interesting Physics
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Discussion Overview

The discussion revolves around the question of whether a person can lift themselves using their own hands, exploring the physics behind self-lifting and the mechanics involved. Participants consider various scenarios and implications related to strength, weight, and physical limitations.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions why a 100kg man can lift a 200kg object but cannot lift himself, suggesting a curiosity about the underlying physics.
  • Another participant challenges the notion that a person cannot lift themselves, referencing the common exercise of pull-ups as a counterexample.
  • A different viewpoint explains that a person cannot lift themselves because they act as their own anchor point, leading to a balance of forces that results in no movement.
  • Some participants humorously suggest that achieving self-lifting might be possible through yoga mastery, although this is met with skepticism regarding its physical feasibility.

Areas of Agreement / Disagreement

Participants express differing views on the feasibility of self-lifting, with some supporting the idea that it is possible under certain conditions (e.g., pull-ups), while others argue against it based on physical principles. The discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Participants do not fully explore the mechanics of force distribution or the specific conditions under which self-lifting might be considered, leaving some assumptions and definitions ambiguous.

Who May Find This Useful

This discussion may be of interest to those exploring concepts in mechanics, physics students, or individuals curious about physical limitations and strength training exercises.

kenny1999
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suppose there are two people

it is of course, possible that one of them could lift up another person by one hand (or two)
if he is powerful enough.

I just wonder if it is possible for someone to lift up himself by his own hand(s) in the world suppose he is strong and powerful enough.

It's possible for a 100kg man to lift up a 200kg object, but why a 100kg man can't lift up himselff which is far less than 100kg

Am I stupid to ask this question? but what is the reason in phyiscs or science
 
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kenny1999 said:
suppose there are two people

it is of course, possible that one of them could lift up another person by one hand (or two)
if he is powerful enough.

I just wonder if it is possible for someone to lift up himself by his own hand(s) in the world suppose he is strong and powerful enough.

It's possible for a 100kg man to lift up a 200kg object, but why a 100kg man can't lift up himselff which is far less than 100kg

Am I stupid to ask this question? but what is the reason in phyiscs or science

What makes you think that a man cannot pull his own weight? Newer seen someone doing pull-ups?
 
A person cannot lift themselves up because they are using themselves as the "anchor point". If you pull upwards on one arm with the other, nothing happens because while you are pulling upwards on the one arm, the one doing the pulling is pushing down on the rest of your body. So nothing happens.
 
Be a yoga master and you can levitate. Physically impossible.
 
azizlwl said:
Be a yoga master and you can levitate.

I hope this is a joke.
 

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