Forces T tension mass M mg In equilibrium T = mg weight weight W = Mg

Slides:

Advertisements

Similar presentations

Aim: What are Newtons 1 st and 3 rd Laws of Motion? Do Now: What is the weight of the box? m = 20 kg F g = mg F g = (20 kg)(9.8 m/s 2 ) F g = 196 N.

Advertisements

Unit 6.3 physics.  An object at rest will stay that way unless a force acts on it  An object in motion will continue to move in the same direction and.

 The force that act on the object are balanced in all direction.  The force cancel each other, so that the resultant force or net force is zero.  Newton’s.

FORCES and Newton’s 1 st Law. A force is a push or pull on an object which can cause the motion of the object to change. Forces cause accelerations! If.

Scope Scope of this presentation is : Calculating forces on static objects. This is an important skill to master, as understanding how forces must balance.

Newton’s Laws of Motion A journey into inertia, net force, and other topics….

2 Mechanical Equilibrium Different Types of Forces Gravity (also called weight) Friction Applied Force Air Resistance Tension Spring Force Normal Force.

You push a large crate with a force of 125 N. It accelerates at a rate of 5 m/s/s. What is the mass of the crate?

FORCES. Force is a vector quantity and is measured in newtons (1N) There are different type of forces: – weight – friction force – normal reaction force.

Newton’s 2 nd Law Of Motion By Mr. Yum. Newton’s 2 nd Law Newton’s 2 nd Law is defined as: Newton’s 2 nd Law is defined as: F = m x a Where, F = force,

Laws of Motion Review.

Free Body Force Diagrams and Newton’s Third Law

FORCES. A force is an influence on a system or object which, acting alone, will cause the motion of the system or object to change. If a system or object.

Force Chapter 6. Force Any push or pull exerted on an object.

Forces Mass, Weight, and Friction. Weight Weight: force of gravity on an object - on Earth your weight is a direct measure of the planet’s force pulling.

Forces and Friction. The weight of an object depends on the strength of gravity wherever the object is. The mass always stays the same.

Newton’s laws and periodic motion.  Objects at rest tend to stay at rest, while objects in motion tend to stay in motion, unless acted on by an outside.

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.

Overcoming (v) Gravity (n) Subject: Science (Grade 4) Prepared by: Faculty member of PGS.

Force Types of Forces Gravity, Mass and Weight Effects of Forces.

Force A push or pull exerted on an object..

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.

PHYS16 – Lecture 10 & 11 Force and Newton’s Laws September 29 and October 1, 2010

What is a Force? A force is a push or a pull causing a change in velocity or causing deformation.

Chapter Five: Forces 5.1 Forces 5.2 Friction

– coefficient of kinetic friction

Forces and Free Body Diagrams. Common Forces Gravity- attractive force between two objects that have mass. AKA Weight To calculate Weight: –Force of Gravity.

Forces Types of Forces Effects of Forces Gravity, Mass and Weight Newton’s Laws Freefall.

1) If drag is 26,400 N and the lift is 29,300 N, determine the weight, mass and thrust, given that the plane is traveling at a constant velocity. What.

Force Scenarios for Student Diagrams

Additional Physics – Forces L/O :- To be able to calculate work done “Work It” Exam Date -

Force Chapter 6. Force Any push or pull exerted on an object.

Define a force. What unit are forces measured in? How can we measure a force?

Chapter Five: Forces  5.1 Forces  5.2 Friction  5.3 Forces and Equilibrium.

Net Forces Learning Goals

Free Body Diagrams. Weight Free Body Diagrams Net Force Present.

Consider a water skier being towed by a light inelastic string at a constant speed of 20 mph behind a powerboat. Air resistance on the water skier is 10N.

Per and 7 Take notes on the following in your Physics Journals HW will be handed out, due on FRIDAY Quiz on Forces on Friday TEST.

More About Force 3) When one object exerts a force on a second object, the second exerts an equal and opposite force on the first. F AB = -F BA.

Concept of a Force. What is a Force? Usually think of a force as a push or pull. A force can deform, stretch, rotate, or compress a body. It makes an.

Inertia or Weight? Newton’s 1 st & 2 nd Laws Name that Force Newton’s 3 rd Law

Chapter Five: Forces  5.1 Forces  5.2 Friction  5.3 Forces and Equilibrium.

FORCE – PUSH OR PULL The unit of measurement for force is the Newton (N)

Free body diagrams.

Newton’s Third Law Review Study Guide

Types of Forces By: Vishvag, Irbi, and Sreeni, members of the force and motion group.

Forces Third Law First Law and Equilibrium Second Law and Acceleration.

FORCES AND FREE BODY DIAGRAMS

Labelling Forces Correctly!.

What is a free-body force diagram?

Forces and the Laws of Motion

Upthrust and Gravity.

SECTION 2: FORCES AND DYNAMICS GOHS

Newton’s Laws of Motion Chapters 2,3,6,7

Forces Revision.

But why did they sink in the first place?

Types of Forces Gravity, Mass and Weight Effects of Forces

Forces Revision.

Chapter Five: Forces 5.1 Forces 5.2 Friction

LO: Learn how forces can be drawn

But why did they sink in the first place?

Forces and the Laws of Motion

Motion and Force. Motion and Force Chapter Four: Forces 4.1 Forces 4.2 Friction 4.3 Forces and Equilibrium.

L1: Force Learning Objectives: Describe what a force is.

Labelling Forces Correctly!.

Motion and Force. Motion and Force Chapter Four: Forces 4.1 Forces 4.2 Friction 4.3 Forces and Equilibrium.

Forces in Equilibrium Name: _______________

Forces Revision.

Presentation transcript:

Forces T tension mass M mg In equilibrium T = mg weight weight W = Mg If the pulley is smooth T1 = T2 T1

Reaction Forces In equilibrium N = mg N plank mg R N F Friction plank

Examples of other forces: A person may push or pull an object An engine could pull an object Wind or air resistance may act Water can provide an upthrust Air causes lift and drag on an aircraft

Force Diagrams Weight Normal reaction Normal reaction Tension Pull Resistance Engine force Weight Normal reaction Air resistance Weight Weight

Force Diagrams Lift Engine force Lift Drag Upthrust Weight Swimmer Water resistance Wind Weight Normal reaction Weight Push Tension Air resistance Weight

Force Diagrams Forces on balloon Forces on Mr Bean Mr Bean's weight Tension Wind Forces on Mr Bean Weight of balloon & Tension Lift Wind Weight Lift from weightlifter Forces on Weights Weights (weightlifter & weights) Normal reaction from floor Forces on Weightlifter

Normal reaction from ground Normal reaction from ground Force Diagrams Weight Normal reaction from ground Tension Forces on man Man’s force Normal reaction from ground Forces on horse Weight Tension Horse resistance Weight Friction Normal reaction Desk Forces on book

Force Diagrams Forces on trailer Forces on car Forces on bag Normal reaction from ground Forces on trailer Weight Tension Resistances Normal reaction from ground Forces on car Weight Engine force Tension & Resistances Weight of bag Tension Forces on bag Weight of tool box Normal reaction from table Tension Forces on tool box Friction