Physics I 95.141 LECTURE 21 11/24/10. Exam Prep Question. The system to the right consists of a cylinder (R=15cm, M=50kg) and 4 2kg (point) masses attached to 30cm massless rods. The system is free to rotate around an axis through its center of mass.

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ByChapter 7: Rotational Motion and the Law of Gravity. A unit of angular measure: radian. y. Angular Speed & Acceleration. length of the arc from the x-axis s:. P. s = r q where s,r in m, and q in rad(ian) . r. q. A complete circle: s = 2 p r. 360 o = 2 p rad. x.

BySTARTER. If the chain moves at 1 m/s and the radius of the rear gear is 8cm, what is the angular speed of the rear gear in rad/s ? . STARTER. Consider two points, A and B, on a spinning disc . 1. Which point goes through the greatest distance in 1 revolution?

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ByHalliday/Resnick/Walker Fundamentals of Physics 8 th edition. Classroom Response System Questions. Chapter 10 Rotation. Reading Quiz Questions. 10.2.1. Angles are often measured in radians. How many degrees are there in one radian? a) 0.0175 b) 1.57 c) 3.14 d) 16.3

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ByRotation 旋轉 (Chap. 10). We are going to consider the rotation of a rigid body (a body of fixed shape and size) about a fixed axis. To begin, we have to define the angular position:. When the body rotates, the angular position θ changes as a function of t .

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ByBilingual Mechanics. Chapter 6 Rotation and Angular Momentum. 制作 张昆实 谢 丽 Yangtze University. Chapter 6 Rotation and Angular Momentum. 6-1 What Is Physics? 6-2 Equilibrium 6-3 The Rotational Variables 6-4 Are Angular Quantities Vectors

ByChapters 10, 11 Rotation and angular momentum. Rotation of a rigid body We consider rotational motion of a rigid body about a fixed axis Rigid body rotates with all its parts locked together and without any change in its shape Fixed axis : it does not move during the rotation

ByFinish Momentum Start Spinning Around. March 22, 2006. Watsup?. Quiz on Friday Last part of energy conservation through today. Watch for still another WebAssign Full calendar for the remainder of the semester is on the website near the end of the last set of PowerPoint slides.

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ByPHYS 1443 – Section 001 Lecture #13. Thursday, June 22, 2006 Dr. Jae hoon Yu. CM and the Center of Gravity Fundamentals on Rotational Motion Rotational Kinematics Relationship between angular and linear quantities Rolling Motion of a Rigid Body Torque Torque and Vector Product

ByAngular Acceleration. . i. . f. . . D. w. . The direction of a is NOT given by the Right Hand Rule (RHR). a. º. D. t. Operational definition of . . A spinning wheel gradually slows. Find the vector . . o =4p rad/s. x. a=p rad/s/s. . . a. .

ByRotational Energy. Real objects have mass at points other than the center of mass. Each point in an object can be measured from an origin at the center of mass. If the positions are fixed compared to the center of mass it is a rigid body. Rigid Body. r i.

ByAngular Variables. We use degrees to measure position around the circle. There are 2 p radians in the circle. This matches 360 ° The distance around a circle is s = r q , where q is in radians. Measuring a Circle. Dq. q. r. The angular displacement is Dq. Angular Velocity.

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