Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
From: "Waggoner, Bill" <BWaggoner@METROPO.MCCNEB.EDU>Right.
From an energy point of view the energy of the "system" is decreasing.
By system I mean the entire person.
Assuming no change in KE of the system, I would tell a student theNO NO NO!!!!! ARRRRRRRRRRRRRRRRRGH! The force on the student due to the
normal force of the floor did negative work on the system. (That is if
we don't view the "system" as a spring that's being compressed.)
Does this necessarily mean the reaction forces of the feet pushing onhow
the floor did postive or negative work on the floor. That depends on
you model that surface, and the initial conditions. Is the floor aSee above.
"spring" as well?