Conceptual Physics
9.4 - Angular acceleration Angular acceleration: The change in angular velocity per unit time. By now, you might be experiencing ...
9.5 - Sample problem: a clock Think about the movement of the minute hand over the course of an hour. Be sure to consider the di ...
9.6 - Interactive checkpoint: a potter’s wheel At a particular instant, a potter's wheel rotates clockwise at 12.0 rad/s; 2.50 s ...
To understand the derivation, you must recall that the arc length ǻs (the distance along the circular path) equals the angular d ...
radius, at any moment in time the mushroom near the outer edge of the pizza has greater tangential velocity than the piece of pe ...
9.9 - Interactive checkpoint: a marching band The performers in a marching band move in straight rows, maintaining constant side ...
Chapter 9 Problems Conceptual Problems C.1 Is it possible for a rotating object to have increasing angular speed and negative an ...
2.2 What is the angular displacement in radians that the minute hand of a watch moves through from 3:15 A.M. to 7:30 P.M. the sa ...
columns to temporarily hide the statue. The magician closes the curtain, then rotates the platform through an angle of just 0.17 ...
10.0 - Introduction In the study of rotational kinematics, you analyze the motion of a rotating object by determining such prope ...
For force applied perpendicularly IJ = rF IJ = magnitude of torque r = distance from axis to force F = force Counterclockwise +, ...
We show how the moment of inertia of an object could be experimentally determined in Example 1. A block, attached to a massless ...
Example 1, where the mass of the object is concentrated in two balls at the ends of the rod. The moment of inertia of the rod is ...
Moments of inertia Spheres Slabs Thin rods 10.5 - Sample problem: a seesaw The axis of rotation is the point where the fulcrum t ...
Draw a diagram Variables What is the strategy? Calculate the moment of inertia of the system: the sum of the moments for the ch ...
The children create torques, and to calculate the net torque, we sum their torques, being careful about signs. The plank creates ...
Flywheels can receive power from more traditional sources, as well. For instance, uninterruptible power sources (UPS) for comput ...
10.8 - Angular momentum of a particle in circular motion The concepts of linear momentum and conservation of linear momentum pro ...
10.9 - Angular momentum of a rigid body On the right, you see a familiar sight: a rotating compact disc. In the prior section, w ...
In the final steps we express the above result concisely, replacing the sum in the last equation by the single quantity I. Step ...
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