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I HOPE that you don't tell your students that the chair's upward
contact force is the N3 partner to your own weight = mg.
This is a common teaching error that gets into some texts.
and MANY classrooms.
At 4:09 PM -0400 11/5/10, Chuck Britton wrote:
How do you 'explain' the contact force?
How does your chair 'know' how much upward force to exert.
Is the chair an 'agent'?
At 3:59 PM -0400 11/5/10, Anthony Lapinski wrote:
I tell my students that every force must have a source!
and it must be part of a 'pair' of forces.
go on, please - tell me about the mathematical box analysis.
thanks
_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
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_______________________________________________
Forum for Physics Educators
Phys-l@carnot.physics.buffalo.edu
https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l