14. Torque & Rotational Dynamics

Torque on Discs & Pulleys

2 Masses on a Pulley - Torque Demonstration

Example Net Torque on a disc

Calculating Net Torque Example Problem - disk rotating

The composite disc below is free to rotate about a fixed axis, perpendicular to it and through its center. All forces are 100 N, and all angles are 37°. The dotted lines are either exactly parallel or exactly perpendicular to each other. The inner (darker) and outer (lighter) discs have radii 3 m and 5 m, respectively. Calculate the Net Torque produced on the composite disc, about an axis perpendicular to it and through its center. Use +/– to indicate direction.<img src="https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/images/224695d6"alt=""/>

Physics - Application of the Moment of Inertia (5 of 11) Object Hanging From a Rotating Disk

Torque On a Pulley Example

Net Torque on a disc

A rope is wrapped around a pulley and two blocks (A and B) are attached to the two ends of the rope, and <math display=“inline”><mrow><msub><mi>m</mi><mtext>A</mtext></msub><mo>=</mo><mrow><mn>2.4</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">kg</mi></mrow></mrow></math> and <math display=“inline”><mrow><msub><mi>m</mi><mi mathvariant="normal">B</mi></msub><mo>=</mo><mrow><mn>3.7</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">kg</mi></mrow></mrow></math>. The pulley itself can be modeled as a solid cylinder with radius 4.5 cm, and mass <math display=“inline”><mrow><msub><mi>m</mi><mrow><mtext>cyl</mtext></mrow></msub><mo>=</mo><mrow><mn>2.6</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">kg</mi></mrow></mrow></math>. What is the magnitude of the acceleration of block A?

A square with sides 4 m long is free to rotate around an axis perpendicular to its face and through its center. All forces shown are 100 N and act simultaneously on the square. The angle shown is 30°. Calculate the Net Torque that the forces produce on the square, about its axis of rotation.<img src="https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/images/9016404f"alt=""/>

Physics - Application of the Moment of Inertia (6 of 11) Acceleration=? When Pulley Has Mass (mu=0)

31.5 Massive Pulley Problems

Suppose a force <math display=“inline”><mi>F</mi></math> is applied tangentially to the edge of a solid cylinder of radius <math display=“inline”><mi>R</mi></math> and mass <math display=“inline”><mi>M</mi></math>. causing an angular acceleration <math display=“inline”><mi>&#x03B1;</mi></math>. If the same force is applied tangentially to a solid sphere also of radius <math display=“inline”><mi>R</mi></math> and mass <math display=“inline”><mi>M</mi></math>. what will be the angular acceleration?

Learn the toughest concepts covered in Physics with step-by-step video tutorials and practice problems by world-class tutors

Patrick

Physics

https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/physics

#FFFFFF

Flipping Physics

MIT OpenCourseWare

Patrick Ford

Hopped Up on Physics

Clutch Prep

Michel van Biezen

wuphysics

1. Intro to Physics Units

2. 1D Motion / Kinematics

3. Vectors

4. 2D Kinematics

5. Projectile Motion

6. Intro to Forces (Dynamics)

7. Friction, Inclines, Systems

8. Centripetal Forces & Gravitation

9. Work & Energy

10. Conservation of Energy

11. Momentum & Impulse

12. Rotational Kinematics

13. Rotational Inertia & Energy

15. Rotational Equilibrium

16. Angular Momentum

17. Periodic Motion

18. Waves & Sound

19. Fluid Mechanics

20. Heat and Temperature

21. Kinetic Theory of Ideal Gases

22. The First Law of Thermodynamics

23. The Second Law of Thermodynamics

24. Electric Force & Field; Gauss' Law

25. Electric Potential

26. Capacitors & Dielectrics

27. Resistors & DC Circuits

28. Magnetic Fields and Forces

29. Sources of Magnetic Field

30. Induction and Inductance

31. Alternating Current

32. Electromagnetic Waves

33. Geometric Optics

34. Wave Optics

35. Optical Instruments

36. Special Relativity

[BOOK PHYS] !CLUTCH

Torque & Acceleration (Rotational Dynamics)

How to Solve:Energy vs Torque

How to Solve: Energy vs Torque

Net Torque & Sign of Torque

Torque Due to Weight

Intro to Torque

General Chemistry

Jules

Study the key concepts of Physics with descriptive videos, questions, and more

General Biology

Jason

Financial Accounting

Brian

Dive deep into Psychology with videos, practice problems, and more.

Psychology

Microeconomics

The first in a two-course sequence introduces the basic structure and functions of the human body

Anatomy & Physiology

College Algebra covers algebraic topics and skills necessary to succeed in college-level math

College Algebra

Organic Chemistry

Johnny

Genetics

Kylia

GOB Chemistry

Microbiology

Cell Biology

Analytical Chemistry

Study topics incliding trogonometric functions, identities and equations, solutions of triangles, complex numbers, and other topics as time permits

Trigonometry

Learn the toughest concepts covered in Precalculus with step-by-step video tutorials and practice problems by world-class tutors

Precalculus

Biochemistry

Macroeconomics

Chemistry

Biology

Math

Business

Social Sciences

Michelle Barry Franco

Building Great Presentations

Eric Zackrison, PhD

Critical Thinking And Problem Solving

Sam Bennett

Embracing Times Of Uncertainty

Nicole Tetreault, PhD

Emotional Intelligence Basics

Eugene Choi, PharmD

Enhancing Your Critical Thinking Skills

Jason Richardson, PsyD

Habits To Win Every Day

Alyssa Lowery, PhD

Having Powerful Advanced Conversations

Don Gilman, EdD

How To Influence & Persuade

Amy Matthews

Leadership Skills For Rising Stars

Listening To Lead

Michael Shermer, PhD

Making Decisions Under Uncertainty

Lynne Hurdle

Mistakes To Avoid When Resolving Conflict

Michael Veltri

Overcoming Decision Making Traps

Mike Vardy

Prioritizing Effectively

Secrets Of Effective Prioritization

Strategies To Build Up Your Creativity

Tools For Decision Making

Tutti Taygerly

Unleash And Advance Your Creativity

Winning Collaboration: How To Work More Effectively With Different Personalities

Writing Emails People Want To Read

Critical Thinking

Self Management

Digital Literacy

Collaboration

Communication

Analytical Thinking

Leadership

Flexibility/Adaptability

Innovation

Eric Zackrison

Nicole Tetreault

Dive deep into Python with videos and more.

Introduction to Python

Arianne Dee

Agile Project and Product Management

Agile & Product Management

Mariya Breyther 

Introduction to Microsoft Power BI

Microsoft Power BI

Chris Sorensen

Data Analysis Fundamentals with Excel

Data Analysis - Excel

Chris Sorensen & Ammul Shergill

Getting Started with  and Cryptocurrency

Introduction to Blockchain

George Levy

Learn Enough HTML, CSS and Layout to be Dangerous

HTML, CSS & Layout

Lee Donahoe & Michael Hartl

Learn Enough JavaScript to be Dangerous: A Tutorial Introduction to Programming with JavaScript