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] |
My quandry is this: why is Earth's kinetic energy conserved and the ball
bearing's kinetic energy NOT conserved? In both cases, an impulse is
imparted perpendicular to the velocity.
It is amusing to push this idea to its limits and consider earth
moving around the sun in an equilateral triangle (with very slightly
rounded corners).
Then earth would go around the sun in a nearly equilateral figure. ...
Yet its KE would still be constant.