
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question

Transcribed Image Text:L
A
B
A
m
m
q
9
Two point charges (each of mass m and charge q),A and B, are suspended by very thin threads as shown above.
a. Which of the diagrams below represents the free body diagram for object A (Here is FBA is the electrostatic force exerted by object B on object A, WA is the weight of object A, TA is the string tension, and N is the normal force)?
O
O
O
W
FBA
YA
ap
FBA
WA
TA
TA
O None of the above.
y
I
1.
FBA
X

Transcribed Image Text:b. Assume that the system is in equilibrium. The x and y components of Newton's second law for object A can be written as:
Ox: TA tan 8- FBA = 0
Y: TA - WA = 0
Ox: TA FBA = 0
Ox: TA sin 8- FBA = 0
Ox: TA COS 8- FBA = 0
Ox: TA cos 0+ FBA = 0
Submit Answer Tries 0/1
Y: TAWA = 0
y: TA cOS - WA = 0
y: TA sin 8-WA = 0
y: TA sin 8- WA = 0
c. Trying to find the angle 8 for the equilibrium position is difficult for the general case. The math, however, becomes simpler if the equilibrium angle is small (i.e. making the small angle approximation). Explain how the small angle approximation can be used in this problem. Using this approximation derive a formula that gives the equilibrium angle <m>0 as a function of the charges q, the length of the string L, the
mass of the object m and, if needed one or more known constants.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by stepSolved in 3 steps with 3 images

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- 4. The figure below shows three equal positive point charges q located at the corners of a square.a. Is the magnitude of the electrostatic field at point B greater than, less than or equal to the magnitude of the field at point A. Please explain.b. If the length of each side of the square is d, write a symbolic an-alytical expression for |⃗EB| using the dummy variable approach to simplify your life. Evaluate your expression for q = 10 nCoul and d = 10 cm.arrow_forwardHelp me pleasearrow_forwardGiven the arrangement of charged particles in the figure below, find the net electrostatic force on the q₁ = 5.25-μC charged particle. (Assume 92 = 12.33 μC and 93 = -17.12 μC. Express your answer in vector form.) 7 8970000i - 9035000j 9₁ (-2.00 cm, 0) X N 93 (1.00 cm, 1.00 cm) ● 92 (0, -1.00 cm)arrow_forward
- A small positive charge q experiences a force of magnitude F1 when placed atpoint 1 as shown. In terms of F1 :a. What is the magnitude of the force on charge q at point 3?b. What is the magnitude of the force on a charge 3q at point 1?c. What is the magnitude of the force on a charge 2q at point 2?d. What is the magnitude of the force on a charge -2q at point 2?arrow_forwardGiven the diagram where q1 is the positive and q2 is the negative charge, while q0 is (0,d), answer the following: a.) What is the net electric field at q0? b.) What would be the electric force acting on charge q0?arrow_forwardSolve the following word problems with solutionarrow_forward
- As shown in (Figure 1), a q = 8.0 nC charge sits at a = 0 in a uniform = 4500 N/C electric field directed to the right. Part A At what point along the x-axis would a proton experience no net force Express your answer with the appropriate units. HA Ipt = Value Units Submit Request Answer Part B At what point along the x-axis would a electron experience no net ford Express your answer with the appropriate units. HA ? Value Units Submit Request Answer Provide Feedback Figurearrow_forwardTwo charges, -Q and -3Q, are a distance apart. These two charges are free to move but do not because there is a third (fixed) charge nearby. Part A What must be the charge of the third charge for the first two to be in equilibrium? Express your answer in terms of Q and 1. IVE ΑΣΦ Q3: = Submit Part B X = Request Answer At what distance from - toward -3Q should the third charge be for the first two to be in equilibrium? Express your answer in terms of Q and 1. -- ΑΣΦ Submit ? Request Answer ?arrow_forwardObjects A and B are both positively charged. Both have a mass of 200 gg , but A has twice the charge of B. When A and B are placed with 15 cmcm between their centers, B experiences an electric force of 0.45 N. 1. How large is the force on A? 2. What is the charge qA? 3.What is the charge qB?arrow_forward
- The point charges in the figure have the following values: q1 = +2.1µC, q2 = +6.3µC. q3 = -0.89µC. Suppose that the magnitude of the net electrostatic force exerted on the point charge qa in the figure is 0.01 N. (Figure 1) Part A Find the distance d. Express your answer using two significant figures. Templates Symtols undo redo teset keyboard shortcuts Help d= 0.34 Im Submit Prevlous Anewere Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the direction of the net force exerted on q2 the figure? Express your answer using two significant figures. Tempiates Symbols undo redo keyboard shortcuts help Figure 1 of 1 e = 94.8 counterclockwise from right direction Submit Prevlous Answers Requeet Answer X Incorrect; Try Again; 5 attempts remaining Provide Feedback 91 43arrow_forward-2.0 nC | -2.0 nC 1.0 cm + 1.0 nC 2.0 nC + | 1.0 cm + 2.0 nC "L Xarrow_forwardThe diagram at the right shows three charges positioned to form an equilateral triangle. Each side has a length of 46 cm and each charge has a positive charge of 7.8 nC. Determine the magnitude and direction of the net electric force exerted upon the charge at point P at the top of the triangle.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON

College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning

University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON

Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press

Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning

Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley

College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON