A bead of mass m sits on a frictionless helical wire whose shape is given by x = 4 cos(8), 4 cos(0), y = 4 sin(0), z = -50. After the bead is released from rest at z = 0 it slides down due to the gravitational force Fg = -mg k. n b) What is the energy before it is released? E = m a) Denoting the speed of the bead as u, give the formula for the energy of this bead. E= -z = 0 V= c) Give the speed of the bead when it has rotated about the z- axis n times:

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