When friction is present in an otherwise conservative mechanical system, the rate of
dissipation of mechanical energy is (where f is the frictional force and v is the speed of the system)
(a) fv
(b) - fv
(c) fv²
(d) - fv²
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harshitchaudhary2015:
very thank you for your helping hand.. but my doubt is that it in the given question the rate of dissipation of mechanical energy is ask asked so why we should apply negative sign before Fv if it is already asking for loss
buddy actually I g.o.o.g.l.e.d it what I find given to you
ok thanks
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