Moments – Learning Outcomes

Slides:

Advertisements

Similar presentations

Torque Torque is defined as the tendency to produce a change in rotational motion.

Advertisements

Torque and Rotation Physics.

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

Balanced Forces.

The Turning Effect of Forces You should be able to: state what the centre of gravity of an object is. describe a simple experiment to determine the centre.

Torque & Levers Relationship between torque, force, and distance.

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

Mechanical Advantage and the Inclined Plane: More Practice.

Rotational Equilibrium

Torque Torque is an influence which tends to change the rotational motion of an object. One way to quantify a torque is Torque = Force applied x lever.

Torque. Every time you open a door, turn on a water faucet, or tighten a nut with a wrench, you exert a turning force. Torque is produced by this turning.

Chapter 9: Rotational Dynamics

Physics: Levers Lab Goals 1.Construct and manipulate a lever to lift a load. 2.Investigate the relationship between the distance of loads, fulcrums and.

A Balancing Act. When is an object in Equilibrium? When its state of motion is not changing What are the conditions for Equilibrium? 1) the net force.

MOMENT OF FORCE (TORQUE) Elisa A. Valladolid Ernesto Rondon High School 19/04/10 4 th year High School.

Centre of Gravity & Moments Stability Two factors determine the stability of an object – Centre of Gravity – Base If the Centre of Gravity of an object.

EDEXCEL IGCSE PHYSICS 1-5 The Turning Effect of Forces

Turning forces and Centre of Gravity

Hooke’s Law and Moments GCSE Physics. Learning Intentions By the end of the lesson we will be able to… Understand the meaning of elastic and plastic behaviour.

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.

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

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

Loads & Forces. L1 L2 F2 F1 F1 x L1 = F2 x L2 F1 = (L2 x F2) L1 Formula for calculating load.

Turning Forces. You know that forces are a push or pull A turning force is another force you come across in everyday life Opening a Coke can, turning.

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.

Principle of moments. Turning forces Students need to be introduced to the idea of turning forces, by giving examples of levers and leverage. The idea.

Rigid bar fulcrum Chaitali prabhudesai 1. Forces The lever consist of two forces: 1) An effort force: which will tend to rotate the bar around the fulcrum.

24/11/2017 Pressure and Moments.

Levers , Moments and Centre of Gravity.

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

Learning Objective and Success Criteria

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

Torque and Levers Lesson 5.

KS3 Physics 9L Moments.

Force and Work.

Levers & Moments.

TURNING EFFECT OF FORCES.

PRESSURE AND MOMENTS In This Topic We Will Learn About:

Levers & Moments.

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

Levers & the Law of Moments

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

An introduction to levers Featuring Wile e Coyote.

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

EDEXCEL IGCSE PHYSICS 1-5 The Turning Effect of Forces

An introduction to levers Featuring Wile e Coyote.

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

Torque and Levers Lesson 5.

Moment of a Force.

Balanced Forces.

26/08/2019 Pressure and Moments W Richards Worthing High School.

Machines Levers & Torque.

Torque & Equilibrium.

Presentation transcript:

Moments – Learning Outcomes Recall two everyday applications of levers. Solve problems about moments. HL: Investigate the law of the lever.

Recall Applications of Levers When objects cannot move, but can swing/turn around a point, we call it a lever. A lever is a rigid object which is free to turn about a fixed point called a fulcrum. e.g. door handle, scissors, wheelbarrow

Solve Problems About Moments For a lever to turn, a force must be applied to it. The “turning effect” of a force can change in one of two ways: change the force being applied, or change the distance from the force to the fulcrum.

Solve Problems About Moments The moment of a force is the force times the perpendicular distance from the force to the fulcrum. 𝑀=𝐹×𝑑 e.g. A man opens a door by applying a force of 5 N to the door. The distance from the point of application of the force to the fulcrum is 120 cm. Calculate the moment of the applied force.

Solve Problems About Moments e.g. The diagram shows a crane in equilibrium. What is the moment of the 9000 N concrete slab about the axis of the crane? Calculate the value of the load marked X.

Solve Problems About Moments e.g. Which has a greater moment for the spanner shown: 9 N applied 8 cm from the fulcrum, or 30 N applied 3 cm from the fulcrum

HL: Investigate the Law of the Lever The Law of the Lever states: when a lever is balanced, the clockwise moment acting on it is equal to the anti- clockwise moment.

HL: Investigate the Law of the Lever e.g. is the lever below balanced?

HL: Investigate the Law of the Lever e.g. The lever below is balanced. What is the value of x?

HL: Investigate the Law of the Lever e.g. The lever below is balanced. What is the value of 𝑦?

HL: Investigate the Law of the Lever Hang a metre stick at the 50 cm mark. Attach two known weights and adjust their positions until the metre stick balances. Measure the distance of the weights from the 50 cm mark. Verify that the clockwise moment equals the anti- clockwise moment by formula.