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Unformatted text preview: Physics 106, Spring 2008 K. Kauder Quiz #4 Name: Please put a box around your final answer. Show all work, using back of sheet if necessary. Dont forget units! 5 pts 1. Two students start a race around the Buckingham Fountain (radius: 40 m). Student A, riding a unicycle, starts at the northernmost point, with a constant angular acceleration of A = 0 . 01 rad s 2 . Student B, starting at the southernmost point, walks with a constant tangential speed of v B = 2 m s . We want to find out where and when the two will meet. v B = 2 m s = 0 = R = 40 m axis of rotation A = 0 . 01 rad s 2 B (a) Draw a sketch, clearly identifying choice of coordinate system, the axis of rotation, and the initial positions and rotation directions of the students. (b) Find Bs angular velocity B . Solution : B = v B R = 0 . 05 rad s Note: I may not have made this point correctly in class! This is the correct formula: When multiplying a rotational quantity with the radius R of the rotation you get its...
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