5th Edition

ISBN: 9780321976444

Author: James S. Walker

Publisher: PEARSON

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Textbook Question

Chapter 11, Problem 16PCE

The L-shaped object in Figure 11-41 consists of three masses connected by light rods. What torque must be applied to this object to give it an angular acceleration of 1.20 rad/s² if it is rotated about (a) the x axis, (b) the y axis, or (c) the z axis (which is through the origin and perpendicular to the page)?

Chapter 11, Problem 16PCE, The L-shaped object in Figure 11-41 consists of three masses connected by light rods. What torque

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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Chapter 11, Problem 15PCE

Chapter 11, Problem 17PCE

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Example Two charges, one with +10 μC of charge, and another with - 7.0 μC of charge are placed in line with each other and held at a fixed distance of 0.45 m. Where can you put a 3rd charge of +5 μC, so that the net force on the 3rd charge is zero?

* Coulomb's Law Example Three charges are positioned as seen below. Charge 1 is +2.0 μC and charge 2 is +8.0μC, and charge 3 is - 6.0MC. What is the magnitude and the direction of the force on charge 2 due to charges 1 and 3? 93 kq92 F == 2 r13 = 0.090m 91 r12 = 0.12m 92 Coulomb's Constant: k = 8.99x10+9 Nm²/C² ✓

Make sure to draw a Free Body Diagram as well

Chapter 11 Solutions

Physics (5th Edition)

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