4. A frictionless particle P, starting from rest at time t=0 at the point (a, 0, 0), slides down the conical helix r = a e, z = be under the influence of gravity, as in the accompanying figure. a. Express the angular velocity de/dt as a function of e. b. Express and Plot the distance the particle travels along the helix as a function of e. Conical helix r=a0.z-be Cone zar Positive z-axis points down. (CLO 4) (3 Marks)

Fig: 1