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Unformatted text preview: ?? ?? ? (b) The spring does 31.0 J of work and this must be the increase in the kinetic energy of the particle. Its speed is then v K m = = = 2 2 310 217 535 . . . . J kg m s b g (c) The force is conservative since the work it does as the particle goes from any point x 1 to any other point x 2 depends only on x 1 and x 2 , not on details of the motion between x 1 and x 2 ....
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- Fall '07