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FIND THE UNKNOWNS: pendulum with no air friction (system energy constant) V=0 PE= 10 J...). ...... KE = PE=9 J Wn-c= KE= O PE=8 J

FIND THE UNKNOWNS: pendulum with no air friction (system energy constant) V=0 PE= 10 J...). ...... KE = PE=9 J Wn-c= KE= O PE=8 J KE= Wn-c= Wn-c= O PE=OJ KE= Does Tension do work on a swinging pendulum? Why yes or no

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