Lior M Burko 1999 Eur. J. Phys. 20 281 doi:10.1088/0143-0807/20/4/306
Lior M Burko
Show affiliationsWe discuss a piecewise-conserved constant of motion for a simple dissipative oscillatory mechanical system. The system is a harmonic oscillator with sliding (dry) friction. The piecewise-conserved constant of motion corresponds to the time average of the energy of the system during one half-period of the motion, and changes abruptly at the turning points of the motion. At late times the piecewise-conserved constant of motion degenerates to a constant of motion in the usual sense.
Issue 4 (July 1999)
Received 8 April 1999
Lior M Burko 1999 Eur. J. Phys. 20 281
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