posted by shahla .
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 ?
final KE=INitial PE - friction force
final KE=1/2 .050*.8-.020*.8
find velocity from the finalke