Circular Motion Section 7.3

Slides:

Advertisements

Similar presentations

Circular Motion. Position on a Circle  Motion in a circle is common.  The most important measure is the radius ( r ).  The position of a point on the.

Advertisements

Circular Motion. Circular Motion: Description & Causes Circular motion is motion along a circular path due to the influence of a centripetal force. [Note:

Centripetal Force. Acceleration in a Circle  Acceleration is a vector change in velocity compared to time.  For small angle changes the acceleration.

Centripetal Acceleration. Acceleration in a circular path at constant speed a c =(v t 2 )/r Centripetal acceleration=(tangential speed) 2 /radius of circular.

Week.  Student will: centripetal accelerationcentripetal force  Solve problems involving centripetal acceleration and centripetal force.

Newton’s Second Law of Motion Page Force and Acceleration Force is a push or a pull. Acceleration is when the motion of an object changes. Examples:

Rotational Motion = Uniform Circular Motion r r v2v2 v1v1 7v7v 2 2 a b Chord ab c d e f Using similar triangles abc def Where r is.

Section 17.2 Position, Velocity, and Acceleration.

Motion in 2D Chapter 6.

CIRCULAR MOTION.

Copyright © by Holt, Rinehart and Winston. All rights reserved. ResourcesChapter menu Chapter 7 Circular Motion and Gravitation.

Ch. 7 Forces and Motion in Two Dimensions

Circular Motion. Uniform Circular Motion Motion of an object at constant speed along a circular path.

Dynamics of Uniform Circular Motion

Centripetal Motion Motion towards the center of a circle.

Uniform Circular Motion. What is uniform circular motion? 4 Movement of an object at constant speed around a circle with a fixed radius 4 Can the velocity.

7-3 Circular Motion. As an object travels in uniform circular motion Its tangential speed remains constant The direction of its velocity is constantly.

Objectives  Explain why an object moving in a circle at a constant speed is accelerated.  Describe how centripetal acceleration depends upon the object’s.

Circular Motion. Uniform Circular Motion Speed of object may be constant Velocity is constantly changing Direction of the velocity is tangent to the circle.

Centripetal Acceleration is a vector quantity because it has both direction and magnitude. Centripetal Acceleration is defined as an acceleration experienced.

Circular motion Objectives: understand that acceleration is present when the magnitude of the velocity, or its direction, or both change; understand that.

CIRCULAR MOTION. WHAT IS UNIFORM CIRCULAR MOTION The motion of an object in a circle at constant speed. However, direction and therefore velocity are.

Notes from 12/9 Kathia. a c : the acceleration of an object moving in a uniform circular path (constant speed / radius) is due to a change in direction.

Uniform Circular Motion Definition: the motion of an object in a circular path with a constant speed Homework: Read pages 153 – 156 P 156 Answer questions:

Circular motion.

CHAPTER 5 CIRCULAR MOTION AND GRAVITATION Kinetics of Uniform Circular Motion An object moving in circular motion is in constant acceleration, even if.

Circular Motion. Demo 1: Newtonian Mountain Newton's Cannon on a Mountain Newton's Cannon on a Mountain What force causes circular motion? What happens.

Circular Motion A brief intro.. Uniform Circular Motion UCM is the movement of an object or particle trajectory at a constant speed around a circle with.

Uniform Circular Motion. Acceleration When an object moves at a constant speed in a circular path, it is constantly changing direction – accelerating.

Uniform Circular Motion. Motion of an object moving in a circle at constant speed. Motion of an object moving in a circle at constant speed. The linear.

1.To consider speed & velocity around a circle 2.To consider acceleration as a change in velocity 3.To define an equation for centripetal acceleration.

Circular Motion. PhET Lady Bug Motion Think about this Click “Show Both” at the top, and “Circular” at the bottom Watch the following and comment: Which.

Conceptual Physics Notes on Chapter 9 CircularMotion.

Circular Motion = the movement of an object at constant speed around a circle with fixed radius Axis – straight line around which rotation takes place.

Circular Motion. Uniform Circular Motion  An object that moves in a circle at a constant speed, v.  The magnitude of the velocity remains the same but.

Warm up 1. a 30 kg child is on a slide (inclined plane) which is at a 55 degree angle with the ground. A. Draw a Free body Diagram of the situation B.

PRINCIPLES OF PHYSICS Circular Motion. When an object moves in a circle its path is described by: Radius (r) – distance from the center to the perimeter.

Circular Motion By: Heather Britton. Circular Motion Uniform circular motion - the motion of an object traveling at constant speed along a circular path.

Circular Motion Part 2 By: Heather Britton. Circular Motion Part 2 According to Newton’s 2nd Law, an accelerating body must have a force acting on it.

C H A P T E R 5 Dynamics of Uniform Circular Motion.

Uniform Circular Motion. What is uniform circular motion? Constant speed Circular path Must be an unbalanced force acting towards axis of rotation- think.

Gravitation. Gravitational Force the mutual force of attraction between particles of matter Newton’s Law of Universal Gravitation F g =G(m 1* m 2 /r 2.

Dynamics of Uniform Circular Motion Uniform Circular Motion Centripetal Acceleration Centripetal Force Satellites in Circular Orbits Vertical Circular.

Circular Motion Chapter 7.3. Motion & Forces What you already know: –Velocity – a measure of the change in over with. –Mass – A measure of the amount.

1 Uniform Circular Motion SP1. Students will analyze the relationships between force, mass, gravity, and the motion of objects. g. Measure and calculate.

In this section you will:

Circular motion  How can a body moving at a steady speed be accelerating?  What is the direction of a centripetal force? 19-Dec-15.

Unit 6: Circular Motion Consider a Ferris wheel. ◦ The cars are in circular motion because they revolve about a single axis. ◦ The line about which the.

Projectiles Motion in Two Dimensions Chapter 7. Projectile An object launched into the air by a force Trajectory The path followed by a projectile.

Uniform circular motion is the motion of an object traveling at a constant speed on a circular path. Uniform Circular Motion.

Physics Section 7.1 Define and apply circular motion What is circular motion? Any object that revolves about.

Circular Motion Centripetal Acceleration. Revisiting Acceleration What is acceleration? Acceleration is how fast an object’s velocity changes. But what.

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

Circular Motion Chapter 7.3. Motion & Forces What you already know: –Velocity – a measure of the change in displacement (distance with direction. –Mass.

UNIFORM CIRCULAR MOTION Centripetal force. UNIFORM CIRCULAR MOTION  Motion at a constant speed around a circle with a constant radius. V Fc Ac.

Uniform Circular Motion. 4 dXxQ7o dXxQ7o.

Circular Motion and the Law of Universal Gravitation.

Forces and Motion in Two Dimensions Circular Motion.

Circular Motion 6.2 In this section you will:

Circular Motion 6.2 In this section you will:

Uniform Circular Motion

Aim: How do we solve problems involving circular motion?

Circular Motion.

Entrance and Exit Slip Questions

Chapter 7 Objective Solve problems involving centripetal acceleration.

Section 2 Acceleration p. 324

Uniform Circular Motion Review

constant speed. Is the object accelerating?

Entrance and Exit Slip Questions

Presentation transcript:

Circular Motion Section 7.3 Physics

Objectives Explain the acceleration of an object moving in a circle at constant speed. Describe how centripetal acceleration depends upon the object’s speed and the radius of the circle. Recognize the direction of the force that causes centripetal acceleration. Explain how the rate of circular motion is changed by exerting torque on it.

Acceleration and Velocity Acceleration is towards the center of the circle. Velocity is at a 90°angle to the acceleration. http://en.wikipedia.org/wiki/Uniform_circular_motion

Centripetal Acceleration The acceleration of an object in uniform circular motion always points in toward the center of the circle: “Center seeking” acceleration – Centripetal Acceleration. ac = v²/r Centripetal acceleration equals velocity squared divided by the radius of the path. ac = (4π²r)/T² T = Time to complete one revolution.

Force Created by Ac Fnet = mac If we substitute for ac using the previous two equations we get: Fnet = (mv²)/r Fnet = m(4π²r)/T²

Practice Problems Page 166 15-16

Worksheets Version 1 Version 2