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As shown in the figure below, a green bead of mass 50 g slides along a straight wire. The length of the wire from point to point is 0.800 m, and point is 0.500 m higher than point . A constant friction force of magnitude 0.020 0 N acts on the bead.

(a) If the bead is released from rest at point , what is its speed at point ?

  • physics -

    final KE=INitial PE - friction force
    final KE=1/2 .050*.8-.020*.8

    find velocity from the finalke

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