Balance and the Pas de Deux

Slides:



Advertisements
Similar presentations
FORCES Mrs. Cholak.
Advertisements

Chapter 5 Newton’s Third Law of Motion
More on Newton’s 3 rd Law. Conceptual Example 4-4: What exerts the force to move a car? Response: A common answer is that the engine makes the car move.
The Science Behind Two Liter Bottle Rockets
PA Multi-Region STEM Partnership Sept 2013 – May 2014 Monthly Meetings (Torque & Center of Mass) Eastern Region Philadelphia/Chester County.
Chapter 8 Rotational Motion.
Chapter 4: Forces Newton’s Third Law You cannot touch
1. THE MECHANICS OF THE BODY
Everyday Forces Chapter 4 Section 4.
Lecture 8 Applications of Newton’s Laws (Chapter 6)
Lesson 2 Pressure.
Motion Analysis By Leung Ho Fai 6B(35) Siu Long Kan 6B(25), group2 In this motion, we are going to analysis the motion of “flying disc” in a projectile.
A ball is lying on a table. The forces on the ball are sketched on the right. Here N is the force of the table pushing up on the ball, to keep it from.
Chapter 10 Study Guide Tuesday, March 23, Section 1 Know Newton’s 1st Law of Motion. –Be able to explain and cite examples. Distinguish between.
Forces Pages 188 to 191. Forces Force - a push or a pull, measured in Newtons (N) Contact Force – is a push or a pull one object applies to another object.
Newton’s Second Law In this chapter we investigate the effect of a net force on a mass. Newton’s Second Law is: Whenever an unbalanced force acts on a.
© Oxford University Press b Terminal velocity At first the parachutist accelerates at 10m/s 2 due to gravity.
Equilibrium and Human Movement
ConcepTEST.. INSTRUCTIONS For conceptual physics questions, refer to Paul Hewitt’s Conceptual Physics. You are expected to read the material on your own.
Force. Something that changes the state of rest or the state of motion of an object. Can be a push or a pull Unit of measure Newtons N.
Types of Forces. Gravitational Force  An attractive force between all objects that have mass.  On Earth gravity is a downward force, always pulling.
Center of Mass. Curriculum Big Idea: All changes in rotational motion are due to torques. Concept: Torque is the rotational analogue of force for translational.
Chapter 5:Using Newton’s Laws: Friction, Circular Motion, Drag Forces.
Chapter 6 Forces in Motion.
Center of Gravity. Definitions Center of gravity (c.g.) = the point located at the center of the object’s weight distribution Center of mass (c.m.) =
Chapter 10 Center of Gravity Center of Gravity Center of Gravity – (CG) the point at the center of its weight distribution.
CG CM Center of Mass The Center of Mass (CM) of an object or objects is the point that moves as if all of the mass were concentrated there and all the.
By Will Weston and Bill Weigle.  Stability pertains to the movement of an object’s center of gravity (also referred to as CG).  Relates to the state.
Velocity and Other Rates of Change Chapter 3.4. Instantaneous Rates of Change 2 *
Chapter 5 Outline Applying Newton’s Laws Statics Dynamics Friction Static friction Kinetic friction Fluid resistance Circular Motion Fundamental forces.
MS. MORGAN Force. What is a Force? Something that changes the state of rest or the state of motion of an object. Can be a…. push or a pull Unit of measurement:
1© Manhattan Press (H.K.) Ltd. 2.4 Motion under gravity.
Lesson 4.4 Everyday Forces Essential Question: What are some of the everyday forces?
More on Newton’s 3 rd Law. Conceptual Example: What exerts the force to move a car? Response: A common answer is that the engine makes the car move forward.
Unit 5 - Work and Energy CHAPTER 8 CONCEPTUAL PHYSICS BOOK CHAPTER 6 PHYSICS BOOK.
Gravity and Orbits. What is Gravity? Newton’s Law of Gravitation The attractive force of gravity between particles is proportional to the product of.
Chapter 3 Forces. Section 3.1: Newton’s 2 nd Law  2 nd Law of Motion: describes how force, mass, and acceleration are related Formula: force = mass x.
Dynamics of Uniform Circular Motion
Doing work.
If an asymmetrical object, such as an axe, is tossed, its motion seems rather complicated, but one special point moves in a simple __________ path… This.
Gravitational Force  Gravity= a force of attraction between objects, “pulls” objects toward each other  Law of universal gravitation= all objects in.
CHAPTER 3: FORCES 3.1 NEWTON’S SECOND LAW.
The Laws of Motion Gravity
Dynamics of Uniform Circular Motion
The Science Behind Two Liter Bottle Rockets
Newton’s Third Law of Motion
Rocket Stability.
Law of Gravitation and Friction
A ball is rolling along a flat, level desk. The speed of the ball is 0
Equilibrium and Human Movement
Dynamics of Uniform Circular Motion
Chapter 2: Lesson 3.
Center of Gravity Chapter 10.
Dynamics of Uniform Circular Motion
8.P.2A.2-5 Newton’s Laws 8/31/17.
Forces Bingo.
Newton’s Laws of Motion
Science Chapter 15 Lesson 1
Friction in Motion Gravity and Motion.
Science Chapter 15 Lesson 1
3-2 GRAVITY.
Dynamics of Uniform Circular Motion
FRICTION.
Coverage of the 1st Long test
Center of Gravity Chapter 10.
Quiz tomorrow/ Friday Homework: Students are to study their notebooks for quiz tomorrow Do Now: What is the equation for Force? Aim: SWBAT review the.
3 Concepts in Physics.
Chapter 2 Reference Types.
Dynamics of Uniform Circular Motion
Presentation transcript:

Balance and the Pas de Deux Alejandro Garcia

Pas de Deux Translated literally from the French, pas de deux means “step of two.” In ballet this term refers to a dance of two persons, typically a man and a woman dancing as partners. Photo from Physics and the Art of Dance by K. Laws

Forces on the Ballerina Forces acting on the ballerina are: Gravity Support (floor) Friction (floor) Friction (hands) Friction (CG) X Gravity Support (Floor) Friction Without her partner, the ballerina would fall forward.

Dancers as a Single Object Taken as a single object, the dancers’ center of gravity is located, roughly, as shown. The upward vertical support force of the floor balances the gravity force (their total weight) X (CG) Gravity Support (Floor) Support (Floor) Support (Floor)

Base of Support The pose is stable as long as the center of gravity is located above the base of support, the area outlined below.

References For more information on balance and the physics of the pas de deux: Physics and the Art of Dance: Understanding Movement, Kenneth Laws, Oxford University Press (2002) Chapter 6, The Pas de Deux Conceptual Physics , Paul G. Hewitt, Addison Wesley (2005) Chapter 10, Rotational Motion