Apparent weight (overload / weightlessness)
Ground-frame Newton's II: N − mg = ma; overweight (a>0), weightless (a<0), fully weightless (a=−g).
Newton’s laws (senior)Hooke, friction, force composition, apparent weight.
Start here
Apparent weight (overload / weightlessness)
Apparent weight changes in an accelerating elevator: N = m(g+a). This “Apparent weight (overload / weightlessness)” page is an MVP interactive sketch — formulas, controls, and live readouts in the browser; a fuller bench may follow.
Apparent weight changes in an accelerating elevator: N = m(g+a).
Key formulas
N-mg=ma\text{超重: }a>0\uparrow\text{失重: }a<0\downarrow
How to use
- Adjust parameters in the left panel.
- Use play / pause and speed controls.
- Match right-side readouts to the formulas.
- Reset to return to the initial state.
Applications
- Apparent weight (overload / weightlessness): Apparent weight changes in an accelerating elevator: N = m(g+a).
- Classroom focus: overweight (a>0), weightless (a<0), fully weightless (a=−g).
FAQ
What does MVP mean on this page?
An interactive sketch with formulas and parameters. Polished Ready labs are the full bench experience.
What does the “Apparent weight (overload / weightlessness)” lab practice?
Tune parameters and match readouts to the “Apparent weight (overload / weightlessness)” relations — useful for prep and demos.
Self-study or classroom?
Both — tune alone, or project “what if…?” demos in class.
Readouts don’t match the formula?
Check units and ranges, then substitute step-by-step from the formula panel.