Halliday, Resnick & Walker — Potential Energy and Conservation of Energy: Problem 11

11 (a) In Problem 5, what is the speed of the flake when it reaches the bottom of the bowl? (b) If we substituted a second flake with twice the mass, what would its speed be? (c) If, instead, we gave the flake an initial downward speed along the bowl, would the answer to part (a) increase, decrease, or remain the same? Reference from Problem 5: In Fig. 8-21, a 2.00 g ice flake is released from the edge of a hemispherical bowl whose radius $r$ is 22.0 cm. The flake–bowl contact is frictionless.