A 675 kg circus performer slides410 m down a pole to the, Ask an Expert

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A 67.5 kg circus performer slides4.10 m down a pole to the circusfloor, starting from rest.

(a) What is the kinetic energy of the performer as shereaches the floor if the frictional force on her from the pole isnegligible? (She will be hurt.)

(b) What is her kinetic energy when the frictional force has amagnitude of 515 N?

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