A small block having a mass 0.1 kg is given a horizontal velocity of v1 = 0.4 m/s when r1 = 500 mm. It slides along the smooth conical surface. Determine the distance h it must descent for it to reach a speed of v2 = 2 m/s. Also, what is the angle of descent θ, that is, the angle measured from the horizontal to the tangent of the path?

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r 500 mrm v 04 s