Today’s Kaupapa: 1) Calculate the position of the centre of mass 2) Describe the motion of an object in terms of its centre of mass 3) Analyse 2D collisions.

Slides:

Advertisements

Similar presentations

Force Diagrams and Calculations More Math!!!. Force Diagram 1 Are the forces acting on this object balanced or unbalanced? What is the net force acting.

Advertisements

Do now: Rātapu, 3 Haratua 2015 A tennis ball of mass 50g is moving at a speed of 20ms -1. It is then hit directly back with a speed of 15ms -1. a) Calculate.

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.

A 2kg mass is suspended from one end of a 1m ruler and a 5kg mass is suspended from the other end. Calculate the centre of mass. x 20N50N 1m – x Do now:

Causing Rotational Motion In order to make an object start rotating about an axis, a force is required However, not only the amount of force applied but.

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.

Warm-Up: Thursday, October 9, 2008 The bowling ball and the balloon take up the same amount of space ( have equal volumes ) Do equal volumes of different.

Chemistry Calculations

Newton’s Laws White Board Review Pick up a board, a marker, a paper towel & a calculator!

A student whirls a 0.75kg mass around on the end of a string in a horizontal circle. The radius of the circle is 81cm and the speed of the mass is 7.1ms.

Do now: Tūrei, 15 Mahuru 2015 Fun Clips: Awesome Mini Bike Loop Globe of Death Progress test tomorrow: Everything so far: Centre of mass, momentum Circular.

What are mass and weight and what are the units for them?

A) Calculate the total anticlockwise *moments b) Calculate the total clockwise moments c) Is this system in equilibrium? *moment = another name for torque.

Tasks: Mane, 19 Whiringa-ā-nuku )Finish Wednesday’s worksheet 2)Activity 9A 3)H/W Set 5 separating blood/plasma oil cleaning pilot training watch.

Motion Revision Quiz questions. Round 1 1.Which of the following is a scalar measurement? displacement distance velocity.

Chapter 5: Turning effect of forces

 Force Due to Gravity. What’s the difference between Mass and Weight?  Mass (m) is the amount of material an object is made from. Also, mass is the.

Motion and Forces in 2 and 3 Dimensions Torque and Rotation.

Formative Assessment. 1. A 130. gram uniform meter stick has a 22.0 g clamp on the 23.0 cm mark, where would you clamp a 35.0 g clamp to make the meter.

What is your objective for today? Describe what a force is and give an example Objective 1 vocabulary: forcemassweight Newtons atomprecision newton spring.

Chapter 8: Equilibrium and Mechanical Advantage

Mass. Triple Beam Balance Mass: is a measure of the amount of matter in an object.

Do now: Why does a tight-rope walker use a long pole? Watch video (30s) Mane, 7 Hakihea 2015.

Forces Test Friday, November 20, Friday, 11/20 Unit 4: Forces  Last chance to turn in missing work for the forces unit!  Respond to the following.

Newton’s Second Law: Force and Acceleration

Centre of Mass/Gravity

Physics 215 – Fall 2014Lecture Welcome back to Physics 215 Today’s agenda: Extended objects Center of mass Torque.

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

Newton’s 1 st Law: More Practice.

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

Weight a moment ……..lets talk about torque. A mass will balance if the weight vector through its centre of mass is supported by, and passes through.

Types of Measurements Basic Units Tools Calculations MISC Conversions.

What do these objects have in common? LO: Understand how things balance What do these objects have in common? Use moments worksheet.

Homeroom. Warm-up OBJ/HW/WU on page 197 W/u: 1.A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. What is the lizard’s acceleration? 2.A force of.

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

“A force of attraction”

P2 REVISION – MOTION Describe what is happening in the graph between points: A-B: B-C: C-D: D-E: Using the formula speed = distance time work out the.

CHAPTER 3: FORCES 3.3 THE THIRD LAW OF MOTION.

Mass vs. Weight.

To start A meter rule, pivoted at its centre of mass, supports a 3.0N weight at its 5.0cm mark, a 2.0N weight at its 25cm mark and a weight W at its 80cm.

How to calculate the torque due to the balance stick

Section 1: Momentum and Impulse

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

** نظام التعليق الهيدروليكي في السيارات يحول الطاقة الميكانيكية إلى طاقة حرارية.

Mass Mass refers to the amount of matter in an object.

Newton’s 3 laws of motion

The Millikan Experiment: Determining the Elementary Charge

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

Use these to prepare your ½ sheet of notes for the test!

Measuring Weight.

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.

Unit 3 Review (Calculator)

EDEXCEL IGCSE PHYSICS 1-5 The Turning Effect of Forces

Today we will… 8.6(A) Demonstrate and calculate how unbalanced forces change the speed or direction of an object's motion.

Moment of a Force.

Lesson 3: Measuring Matter Essential Questions:

Solution... Click for answers.

TURNING EFFECT OF FORCES

Standards for Measurement

Moment of a Force.

Moments and Centers of Mass

Gravitational Constant

Calculate 9 x 81 = x 3 3 x 3 x 3 x 3 3 x 3 x 3 x 3 x 3 x 3 x =

Conservation of Momentum

Presentation transcript:

Today’s Kaupapa: 1) Calculate the position of the centre of mass 2) Describe the motion of an object in terms of its centre of mass 3) Analyse 2D collisions using centre of mass Mane, 25 Haratua 2015

Warm-up: Where does the pivot need to be placed so that the 4m beam is balanced?

Centre of Mass The weight of an object acts down through the object’s centre of mass. If the object is suspended, this is the point at which it will balance Can think of all the mass of the object acting down through this point

Board notes – calculating COM positon

A 2kg mass is suspended from one end of a 1m ruler and a 3kg mass is suspended from the other end. Calculate the centre of mass. x 2 x 9.81 N3 x 9.81 N 1m – x

Activity – use a ruler

1) Axe Throwing 2) MIT demo 3) Board notes – COM motion

Finish Activity 7D