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]

Re: are normal reaction and tension conservative ?


On Sat, 30 Jun 2001, I wrote:

... a rope may (and usually does) exert a stronger pull at
each specific length while being extended than when it is
subsequently allowed to relax. As a result, the work done
*by* an external agent to extend the rope is smaller than the
work done *on* the external agent as it is allowed to relax.

Of course, I meant *larger.* (But doncha just have to love those
ropes that give more than they get? Perhaps they could become the
basis for our energy policy in the Golden State.)

John Mallinckrodt
Cal Poly Pomona