Moments.

Slides:

Advertisements

Similar presentations

Pressure and Moments.

Advertisements

Do now Can you read the “impulse” sheet you stuck in last lesson?

What’s going on here?. Moments How to calculate the total moment about a pivot Understand how to resolve forces at an angle To be able to use moments.

Principle of moments Done By : Low Zhen Jie Cheng Ivy Miao Jing Deborah Lye.

Investigation of the laws of equilibrium for a set of coplanar forces The Professional Development Service for Teachers is funded by the Department of.

Do now! Can you write down on the piece of paper 3 things you learnt last lesson (there is a clue in the picture!)? WITHOUT looking in your books!

TorqueTorque A turning force. Torque (T) – a turning force Torque depends on the linear force applied and the distance from the fulcrum (pivot point)

Moments and Turning Forces. The Lifting Challenge  Who is strongest?

Do now Can you read the hydraulics pages of your books (p157)?

Unit 9L Lesson 5 Moments Objectives: to understand the variables on which moments depend, to be able to calculate moments, to able to understand the principle.

Starter Forces sometimes make objects _______ or rotate around a _________. The turning effect of a ______ is called a __________. Moment of a force =

Do now! Can you finish the “Moments” questions we started yesterday?

IGCSE textbook Chapter 5, p. 42

EDEXCEL IGCSE PHYSICS 1-5 The Turning Effect of Forces

Experiment -Testing the principle of moments When forces act in a different direction, yet still balance, the total turning effect in each direction will.

Turning forces and Centre of Gravity

TOPIC 10 Moment of a Force. So far we have mainly considered particles. With larger bodies forces may act in many different positions and we have to consider.

Describe moment of force or torque as moment = force × perpendicular distance from pivot to the line of action of force;

MOMENTS What is moments? A force can cause many things to move or stop. When a force causes an object to turn, this turning effect is called moments.

Shie Yu Hao (22) Per Sheng Xiang (19). Force A -A smaller force is needed if applied nearer to hinge Pivot Hinge Force B -A larger force is needed if.

R F F F F MOMENT of FORCE = F x r.

AQUINAS DIOCESAN GRAMMAR Moments Double Award - Physics calculate the moment of a force as force times perpendicular distance form the pivot describe.

Moments LO: be able to calculate moments 07/03/2016 Write down everything you can remember about moments from Yr 9.

Rigid Bodies in Equilibrium

PHYSICS – Forces 2 Moments

Moments In order to understand Mechanisms better, we need to understand pivots, moments and equilibrium. Boom Counter balance weight.

Levers in everyday life We are familiar with levers in everyday life, they make our life easier..... GIVE ME A PLACE TO STAND AND I WILL MOVE THE EARTH.

Mechanisms MOMENTS AND LEVERS.

TORQUE The turning effect of a force. Torque Which way will the door turn? Rachel Julia.

24/11/2017 Pressure and Moments.

A LEVEL PHYSICS Year 1 Introducing Moments A* A B C

Forces Glossary The centre of gravity of an object is the point at which the weight of the object can be said to act. © Mike Benn, Graham George 2016.

MOMENTS Which spanner would A you use to undo a tight nut A or B? B

KS3 Physics 9L Moments.

TURNING EFFECT OF FORCES.

PRESSURE AND MOMENTS In This Topic We Will Learn About:

EDEXCEL IGCSE / CERTIFICATE IN PHYSICS 1-5 The Turning Effect of Forces ’

Chapter 35 Moments, Levers & Centre of Gravity

Moment : the turning effect of a force about a pivot

Moments A moment of a force is a measure of its tendency to cause a body to rotate about a point or axis. It is the same as torque. A moment (M) is calculated.

Moment of a Force.

Starter Questions Copy the diagram and label the forces

TURNING EFFECT OF FORCES

Turning Forces and Centre of Gravity

All the clockwise ……………. on the right hand side are

An introduction to levers Featuring Wile e Coyote.

Investigation of the laws of equilibrium for a set of coplanar forces

A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached.

Moments – Learning Outcomes

28/02/2019 Dog-nap.

EDEXCEL IGCSE PHYSICS 1-5 The Turning Effect of Forces

An introduction to levers Featuring Wile e Coyote.

Moment of a Force.

Levers A lever is a rigid body free to rotate about a fixed point called a fulcrum.

TURNING EFFECT OF FORCES

G8 Topic 9 Forces in Action

Turning Moments We know its easier to turn a bolt with a long handled spanner and its easier to close a door pushing at the edge rather than near the hinges.

Mechanisms Simple Machines

Moment of a Force.

Moment of a force or Torque

Torque & Equilibrium.

Presentation transcript:

Moments

What happened here?

A force is applied about a pivot causing a turning effect. What is a moment? A force is applied about a pivot causing a turning effect.

What do Levers Do? They allow us to apply a small force, but get a BIG TURNING EFFECT – this turning effect is called a MOMENT

Moment = Force x Perpendicular distance from pivot. Increasing moments Moment = Force x Perpendicular distance from pivot.

Moment = Force x Perpendicular distance from pivot. Calculating Moments Moment = Force x Perpendicular distance from pivot. A spanner of length 0.25m is used to turn a nut with a force of 40N. Calculate the moment. If the spanner above is replaced with one of length 0.2m, what force is now required to create the same turning effect?

Perpendicular?

Moments

Equilibrium? Anticlockwise Moment = Clockwise Moment “THE PRINCIPLE OF MOMENTS”

“SEE SAWS!”

Moments

Finding an unknown weight

Moments

3 or more????

3 or more????

Moments

Always, sometimes, never? The moment of a force is equal to the force multiplied by the distance from the pivot. The moment of a force is equal to the weight. The moment of a force is equal to the force multiplied by the perpendicular distance between the line of action of the force and the pivot. The anticlockwise moments will equal the clockwise moments. If the anticlockwise moments are greater than the clockwise moments the body will spin. For a beam with no weights acting on it, the pivot should be in the centre of the beam for it to balance. There will be a moment due to the weight of the beam if the beam’s centre of mass rests on the pivot.

LEVERS and GEARS