Formative Assessment. 1. A bicycle going 13.5 m/s has 0.680 cm diameter wheels. What is the angular velocity of the wheels in rad/s? in RPM? (39.7 rad/sec,

Slides:

Advertisements

Similar presentations

A bicycle wheel rotates through four complete revolutions in 2 seconds

Advertisements

Chapter 11A – Angular Motion

Pg. 472 Homework Pg. 324#70 – 76 all #1ɣ = 68°, b = 3.88, c = 6.61 #2α = 35.97°, ɣ = 34.03°, c = 4.76 #3 = °, b = 27.55, c = #4No triangle.

PHY PHYSICS 231 Lecture 15: Rotations Remco Zegers Walk-in hours Thursday 11:30-13:30 Helproom.

Circular motion.

Bung on a String with a partner work out the forces acting on the bung - what happens to the bung when you release it at each point around the circle?

S = rθ is valid for θ in both degrees and radians.

R OTATIONAL K INEMATICS. A NGULAR M OTION E QUATIONS Motion equations can be written in terms of angular quantities.

Section 8-2: Kinematic Equations Recall: 1 dimensional kinematic equations for uniform (constant) acceleration (Ch. 2). We’ve just seen analogies between.

Angular Mechanics - Kinematics Contents:

Section 3.5 Velocities.

Cutnell/Johnson Physics 8th edition Reading Quiz Questions

Circular Motion. Questions for Consideration  How do we measure circular motion?  What is a radian?  What are the angular analogs of linear motion?

Chapter 8 Rotational Kinematics. Rotation – (rotate) Revolution – (revolve) To move around an external axis. To spin on an internal axis.

Copyright © 2012 Pearson Education Inc. PowerPoint ® Lectures for University Physics, Thirteenth Edition – Hugh D. Young and Roger A. Freedman Chapter.

Ch 8. Rotational Kinematics

STARTER Consider two points, A and B, on a spinning disc. 1. Which point goes through the greatest distance in 1 revolution? 2. Which point goes through.

Copyright © 2009 Pearson Education, Inc. Lecture 1 Rotational Motion.

Angular Mechanics - Centripetal and radial accel Contents: Review Tangential Relationships Radial vs tangential Centripetal acceleration | WhiteboardWhiteboard.

Chapter 8 Rotational Kinematics. Radians Angular Displacement  Angle through which something is rotated  Counterclockwise => positive(+) Units => radians.

Rotational Motion and the Law of Gravity.  = angle from 0 r = radius of circle s = arc length (in radians)  = (in radians)

Angular Kinematics Ch 9 Notes. What is a radian? 1 Θ rad = 57.3 ͦ of twist.

CIRCULAR MOTION. Linear Motion d – distance (in meters) v – velocity (in meters/second) a – acceleration (in meters/second 2 ) Distance = 2  r.

Which of the following angles equals 2p radians?

Chapter Angular Position, Velocity, and Acceleration 10.2

Angular Mechanics - Kinematics Contents: Radians, Angles and Circles Linear and angular Qtys Conversions | WhiteboardConversionsWhiteboard Tangential Relationships.

Angular Motion Objectives: Define and apply concepts of angular displacement, velocity, and acceleration.Define and apply concepts of angular displacement,

Physics. Session Rotational Mechanics - 1 Session Opener Earth rotates about its own axis in one day. Have you ever wondered what will happen to the.

© Shannon W. Helzer. All Rights Reserved. 1 Unit 10 Circular Motion.

ConcepTest 7.1aBonnie and Klyde I Bonnie Klyde Bonnie sits on the outer rim of a merry-go-round, and Klyde sits midway between the center and the rim.

Angular Mechanics - Torque and moment of inertia Contents: Review Linear and angular Qtys Tangential Relationships Angular Kinematics Rotational KE Example.

Circular Motion Radians An angle in radians is defined as the ratio of the arc length to the radius. s r r  (radians) =arc length / radius  = s / r 

9 Rotation Rotational Kinematics: Angular Velocity and Angular Acceleration Rotational Kinetic Energy Calculating the Moment of Inertia Newton’s Second.

Kristyna Partain, Chris Engler, Risa Thompson, Stuart Goldberg 3B-Physics.

Chapter 8 Rotational Motion

Rotational Kinematics and Inertia. Circular Motion Angular displacement  =  2 -  1 è How far it has rotated  Units radians 2  = 1 revolution Angular.

Rotational Motion Kelly Johnson, Ashley Webster, Tait Woodward, Sarah Martin, Sara Chiochetti, Jessica Kellenbenz The KATS 3A.

Formative Assessment. 1. A mechanic needs to exert 385 mN of torque. He weighs 833 N and he stands on the handle of his wrench that is making a 17.0 o.

Chapter 3.1 Notes Rate. The speed of an object is the ratio of distance in a given time. The speed of an object is the ratio of distance in a given.

Chap 3 – Sec 1 Rate in Mechanical Systems. Objectives Define speed, velocity & acceleration. Explain the difference between speed & velocity. Explain.

Circular Motion Lecture 08: l Uniform Circular Motion è Centripetal Acceleration è More Dynamics Problems l Circular Motion with Angular Acceleration è.

Plan for Today (AP Physics I) Notes/Lecture on Rotational Motion.

Circular Motion Know what circular motion & angular speed are Understand the relationship between tangential speed and angular speed Be able to link Newton’s.

Angular Mechanics - Radians r  s Full circle: 360 o = 2  Radians  = s/r Radians = m/m = ? TOC.

Angular Motion AP Physics 1. Revolving Motion vs Rotating Motion The Earth ____________ around the Sun while _____________ around an axis. Revolving Rotating.

Rotational Motion Phys 114 Eyres. Circles: Remember T is time to go around once.

Angular Mechanics - Kinematics Contents:

Rotation Objectives: Circular Motion: Angle and Speed

Rotational Motion: x v a(tangent) What is a radian?

How is rotational motion related to linear motion?

Physics 111 Rotational Motion + inertia

Angular Mechanics - Centripetal and radial accel Contents:

Rotational Motion Angles, Angular Velocity and Angular Acceleration

Angular Mechanics - Kinematics Contents:

Angular Velocity Linear Velocity.

Angular Mechanics - Radians

Rotational Motion Chapter 8.

الفصل 1: الحركة الدورانية Rotational Motion

Kinematic Equations.

Rotational Kinematics

Rotational motion AH Physics.

ANGULAR MOTION © 2007.

Applied Dynamics - Assignment

3.3 Angular & Linear Velocity

Rotation Kinematics.

Describing and Measuring Motion

Section 2 –Linear and Angular Velocity

Aim: How do we explain rotational kinematics?

Aim: How do we explain rotational kinematics?

Rotational Kinematics

Presentation transcript:

Formative Assessment

1. A bicycle going 13.5 m/s has cm diameter wheels. What is the angular velocity of the wheels in rad/s? in RPM? (39.7 rad/sec, 379 RPM)

2. What is the tangential velocity of a 4.50 cm radius hard drive spinning at RPM? (24.5 m/s)

3. What time will it take a wheel to speed up from 12.0 rad/s to 47.0 rad/s with an acceleration of 1.40 rad/s/s? (25.0 s)

4. A hard drive takes 4.80 s to speed up from rest to RPM. How many revolutions does it go through in doing this? (288 revolutions)

5. A car with m radius wheels speeds up to 28.0 m/s over a distance of 112 m with an acceleration of 2.60 m/s/s. What is the initial angular velocity of the wheels? (31.6 rad/s)

more

16. A motor speeds up from RPM with an angular acceleration of 2.90 rad/s/s for 19.0 seconds. Through what angle in radians does it rotate? (3210 rad)

17. A car tire initially rotating at 37.0 rotations per second slows down through 148 rotations in 5.20 seconds. What is its final angular velocity in rotations per second? (19.9 rot/s)

18. A drill speeds up from 680. RPM to 1540 RPM with an acceleration of 1.80 rad/s/s. How many rotations does it go through? (926 rotations)

19. A skateboard wheel speeds up from 5.30 rotations/sec to 12.0 rotations/s in 9.00 seconds. What is the angular acceleration in rad/s/s? (4.68 rad/s/s)

20. A turntable accelerates at rad/s/s from rest to 33.3 RPM. What is its angular displacement in radians? (7.28 rad)

question