Presentation is loading. Please wait.

Presentation is loading. Please wait.

Aim: How do we define equilibrium in a system?

Published byAmber Palmer Modified over 6 years ago

Similar presentations

Presentation on theme: "Aim: How do we define equilibrium in a system?"— Presentation transcript:

1 Aim: How do we define equilibrium in a system?
Do Now: Define equilibrium HW: Problem Set 1, Q-1 & 2

2 Equilibrium Object is at Rest
Object is moving at constant speed in a straight line.

3 Demo 1 Block in air “Force” “Force” Spring scale Spring Scale
“Not Moving” ***Is the block at equilibrium? YES!!! It’s not moving! Two students do this

4 4 Steps for Equilibrium Problem
Draw a Free Body Diagram Write that the “Up Force = Down Force” & “Left Force = Right Force” Write Newton’s Second Law in all directions Solve for Unknown Draw free body diagram from last demo F1 is force of person on block, F2 is force of person on block

5 Demo 2 Block in air Force 2 Force 1 Force 3
***Is the block at equilibrium? YES!!! It’s not moving! Let 3 students do this and solve for one left out force. After math is done, show physics works! F1 = F2 + F3

6 Demo 3 Block on Table Draw Free Body Diagram and label forces
Block is in contact with something, so there must be a force! Block is in contact with something, so must be a force. Weight = force of earth on block. (wont get right away) Fn = Force of table on block

7 Summary Solve for the forces described using the 4 Step Method!

8 A Block resting on a table is pushed down on with a force of 10 N, but is also being pulled on to the right by two people with a force of 12 N and pulled on to the left by one person. The block is not moving. What forces will make the statement true? Draw a diagram to help explain!

9 Summary What does it mean to be in equilibrium?
What form of measurement do we use? What is Newton’s Second Law?

Download ppt "Aim: How do we define equilibrium in a system?"

Similar presentations

1 st Free-body HW Assignment Examples in real life.

1 st Free-body HW Assignment Examples in real life.
 Friction opposes motion  Friction is dependent on the texture of the surfaces  Friction is dependent on normal force motionfriction.

 Friction opposes motion  Friction is dependent on the texture of the surfaces  Friction is dependent on normal force motionfriction.
Do Now: 1. Draw a free body diagram (all the forces) acting on a water skier being pulled by a boat. 2. What is the net force acting on this object?

Do Now: 1. Draw a free body diagram (all the forces) acting on a water skier being pulled by a boat. 2. What is the net force acting on this object?
Weight, Mass, and the Dreaded Elevator Problem

Weight, Mass, and the Dreaded Elevator Problem
Chapter 4 The Laws of Motion. Forces Usually think of a force as a push or pull Usually think of a force as a push or pull Vector quantity Vector quantity.

Chapter 4 The Laws of Motion. Forces Usually think of a force as a push or pull Usually think of a force as a push or pull Vector quantity Vector quantity.
Chapter 5 The Laws of Motion. Forces Usually think of a force as a push or pull Usually think of a force as a push or pull Vector quantity Vector quantity.

Chapter 5 The Laws of Motion. Forces Usually think of a force as a push or pull Usually think of a force as a push or pull Vector quantity Vector quantity.
Regents Physics Agenda Introduction to Forces

Regents Physics Agenda Introduction to Forces
Newton’s 2 nd Law. Force on Object Objects acted on by a net unbalanced force will accelerate in the direction of the force This means they will speed.

Newton’s 2 nd Law. Force on Object Objects acted on by a net unbalanced force will accelerate in the direction of the force This means they will speed.
Forces in 1 Dimension Chapter 4. 4.1 Force and Motion Force is push or pull exerted on object Forces change motion –Makes it important to know the forces.

Forces in 1 Dimension Chapter Force and Motion Force is push or pull exerted on object Forces change motion –Makes it important to know the forces.
Newton’s Third Law: Run and Jump

Newton’s Third Law: Run and Jump
A Force Caused by Gravity.  If we apply Newton’s 2 nd Law to objects accelerating due to gravity F G = mg  F G – force of gravity, commonly called.

A Force Caused by Gravity.  If we apply Newton’s 2 nd Law to objects accelerating due to gravity F G = mg  F G – force of gravity, commonly called.
PAP Physics. Unit is the NEWTON(N) Is by definition a push or a pull Can exist during physical contact (Tension, Friction, Applied Force) Can exist with.

PAP Physics. Unit is the NEWTON(N) Is by definition a push or a pull Can exist during physical contact (Tension, Friction, Applied Force) Can exist with.
Chapter 4 Dynamics: Newton’s Laws of Motion 2013 - 2014.

Chapter 4 Dynamics: Newton’s Laws of Motion
Chapter 4.1 Review. 1. What is the difference in a field force and a contact force? Give one example of each.

Chapter 4.1 Review. 1. What is the difference in a field force and a contact force? Give one example of each.
Newton’s First Law Notes Force: A push or pull More than one force can act on an object at the same time. Net Force: Combination of all forces acting on.

Newton’s First Law Notes Force: A push or pull More than one force can act on an object at the same time. Net Force: Combination of all forces acting on.
Newton’s Laws 10min test q1 Motion direction pull Weight (force due to gravity – don’t just say ‘gravity’) Friction (opposite to the motion) Contact force.

Newton’s Laws 10min test q1 Motion direction pull Weight (force due to gravity – don’t just say ‘gravity’) Friction (opposite to the motion) Contact force.
Unit Two: Dynamics Section 1: Forces. What Do I Already Know? Take 10 minutes to discuss with the person next to you. You can use your textbook and/or.

Unit Two: Dynamics Section 1: Forces. What Do I Already Know? Take 10 minutes to discuss with the person next to you. You can use your textbook and/or.
Warm Up: Get Out Your Monkeys (HW)! Seatbelt Check! Why are seatbelts important? Describe in terms of the laws of motion.

Warm Up: Get Out Your Monkeys (HW)! Seatbelt Check! Why are seatbelts important? Describe in terms of the laws of motion.
Net Force (Free Body) Diagram. Newton’s Second Law.

Net Force (Free Body) Diagram. Newton’s Second Law.
What is a force? An interaction between TWO objects. For example, pushes and pulls are forces. We must be careful to think about a force as acting on one.

What is a force? An interaction between TWO objects. For example, pushes and pulls are forces. We must be careful to think about a force as acting on one.

Similar presentations

Ads by Google