Question

Name Lecture Section: 8amロ11am 3pm physID PHYS 141 -Written Homework #11 (Chapter 10b) Due Date: 11:59pm on Friday, April 12, 2019 For full credit, clear, legible, and correctly-rotated pages must be submitted to the correct location 1. (4 points) (Text 10.52) A gyroscope on the Moon. A certain gyroscope precesses at a rate of 0.500 rds when used on Earth. If it were taken to a lunar base, where the acceleration due to gravity is 0.165g, what would be its precession rate? es. You may insert additional pages, and they can be uploaded to Crowdmark 2. (6 points) (Based on 10.42) A diver comes off a board in a "straight" form (subscript "S") with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of Is. She then tucks into a small ball (subscript "B"), changing her moment of inertia to Ia. While tucked, she rotates s revolutions in a time Ta. If she hadn't tucked at all, how many revolutions &s would she have made in a different time Ts from board to water? To be clear, you are finding an expression for & in terms of the known (given) quantities (and not in terms of any unknown quantities). Known Unknown: s,s, B, Ls, LB Page 2 of 3 pages. You may insert additional pages, and they can be uploaded to Crow 3. (10 pts) (Based on 10.87 but DIFFERENT) A 55 kg runner runs around the edge of a horizontal turntable mounted on a vertical, frictionless axis through its center. The runners velocity relative to the earth has magnitude of 3.I The turntable is rotating in the opposite direction with an angular velocity of magnitude 0.20d relative to the earth the turntable is 3.0m, and its moment of inertia about the axis of rotation What should be the runner's final angular velocity (relative to the earth) turntable rotate in the same direction as the runner, again at 0.20 The radus of is of rotation is 120 kg-m r if the goal is to have the Page 3 of 3 pages. You may insert additional pages, and they can be uploaded

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