HW_10 - P112 Spring 2008 Homework #10 Reading: 9.1-9.4,...

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P112 Spring 2008 Homework #10 Reading: 9.1-9.4, 10.1-10.5 Not all concepts will be covered in class – you are responsible for all material in the reading and in the homework problems. Problems: 1. A yo-yo (spool) consists of two identical uniform solid disks, each of mass m, radius R, and width D, connected by a spindle (peg) of radius r and negligible mass. (a)What is the yo-yo's total moment of inertia (or rotational inertia) about its center axis? Your answer may contain any quantities shown in the diagram, as well as physical and numerical constants. (b)The yo-yo starts from rest and rolls freely a distance H down the string whose top end is held fixed. What is the yo- yo's final angular speed of rotation (in rad/s)? Your answer may contain quantities in the diagram, H, and physical and numerical constants, and it should be simplified if possible. Please show your work. 2. Calculate the torque (magnitude and direction) about point 0 due to the force F in each of these cases. In each case, the force and the rod both lie in
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HW_10 - P112 Spring 2008 Homework #10 Reading: 9.1-9.4,...

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