Dynamics and Space Learning Intention You will be able to:

Slides:

Advertisements

Similar presentations

1.To investigate the value of g on other planets in our solar system & to practice our graph drawing and other practical skills 2.To recreate some of.

Advertisements

Gravity. GRAVITY DEFINED Gravity is the tendency of objects with mass to accelerate towards each other Gravity is one of the four fundamental forces (interactions)

The mass of an object and it’s weight are different things. Here we’ll show you how mass, weight, and gravity are all related.

Mass & Weight D. Crowley, 2008.

P3 1.6 Gravitational attraction

Mass, Weight and Gravity. Student Learning Objectives Students will be able to explain mass of objects with reference to a basic atomic structure Students.

Gravity and Space. Gravity Gravity is an attractive force that affects anything with mass: Note that this force goes both ways – the Earth is attracted.

Newton's Universal Law of Gravitation

 Calculate the acceleration that this object experiences 30 kg 150 N.

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 reasoned that there is a force of attraction between every two objects in the universe.

Evaluating Experiments D. Crowley, Evaluating Experiments To be able to evaluate experiments, and know the difference between mass and weight Monday,

1 Ambition – Respect - Excellence Ardrossan Academy Dead Earth Subtopic – SPACE – Gravity, MASS & weight.

Gravity is a pulling force It pulls things down towards the earth.

Gravity. Gravity is a pulling force It pulls things down towards the earth.

Mass, Weight and Gravity Physics Mr. Maloney © 2002 Mike Maloney Objectives Students will be able to  explain how mass and weight are related to each.

Mass vs. Weight.

The Gravitational Force. GRAVITY The force that attracts a body towards the center of the earth, or towards any other physical body having mass The Sun’s.

1. 2 Introduction What does this bathroom scale measure? What does this beam balance measure?

Gravity and Free Fall.  Gravity - attraction between objects with mass  Gives weight  Causes free fall Gravity.

Why does an object fall downwards…………….? Does the object also fall downwards on the moon or on other places………….?

Find the gravitational attraction of the moon to the Earth using the regents reference tables. What would the gravitational attraction of the Earth to.

Dynamics and Space Newton’s laws. Learning Outcomes Applications of Newton’s laws and balanced forces to explain constant velocity, making reference to.

FORCES 2 : WEIGHT vs MASS By the end of this presentation, you should be able to : Explain the difference between weight and mass? Describe the difference.

The Solar System. Mercury Mercury is the closest planet to the sun. Mercury is the closest planet to the sun.

Warm Up – Copy these definitions down in your notebook

Astronomical Facts and figures

Mass and Weight.

Gravity and Space Objectives To understand ……

Gravity and Free Fall.

LESSON 18 Weight & Mass Recall that according to Newton’s Second Law of Motion, the acceleration of an object is proportional to its mass and the force.

Mass and weight.

L-3 Gravity and Free Fall

What is a force? What 3 things can forces do?

Enduring Understanding: Studying dynamics (causes of motion) has had a profound effect on the way humans view their world. Essential Question: What may.

Newton’s Second Law of Motion

How is mass different from weight?

The measuring device shown is used to measure the weight of an object.

Bottom of Circle Book.

Gravity and Weight 17 November 2018 Objectives: To describe the difference between mass and weight on the surface of planets. To describe the gravitational.

Introduction to Physical Science Mass and Weight

23/11/2018 Gravity and Space.

23/11/2018 Gravity and Space.

Motion and Forces.

Gravitational Force the gravitational field strength is the amount of force per unit mass acting on an object in the field the gravitational field strength.

Warm Up 11/26 What is the difference between speed and velocity? time

Reviewing Main Ideas Forces A force is a push or pull.

Chapter 11 Looking at the Universe

DO NOW QUESTION Say you become an astronaut. Will you WEIGH more, less, or the same on the moon? Less Why? Because the moon has less gravity than Earth.

Who is this? What did he do?

Comparatives and Superlatives

Space And Gravity Ben Kendall 9B.

Gravity and The Law of Universal Gravitation

Science. Planner. 1/31/17 WALT: understand Surface Gravity. WU:

The Planets of our Solar System The Terrestrial Planets

Examine the forces exerted on objects by gravity

Mass, Weight and Gravity

Comparatives and Superlatives

Gravity Factor # Beans Moon ________ x 100 = Mercury Venus *Earth 1

What are the two different types of satellites?

Presentation transcript:

Dynamics and Space Learning Intention You will be able to: State the relationship between weight, mass and gravitational field strength. Carry out calculations involving mass, weight and gravitational field strength within our solar system.

Weight, mass and gravitational field strength Mass is the quantity of matter present in a body – the total of all the protons, neutrons and electrons it is made from. Mass is measured in kilograms (kg). Weight is a force which is caused by the pull of gravity. On Earth, the weight of 1 kilogram is approximately 10 newtons. We say g = 10 N/Kg where “g” is called “the gravitational field strength”. Gravitational field strength is defined as “the weight per unit mass”. Using a Newton balance measures weight.

To find the weight of any mass use the following: W = mg where: W is the weight measured in N m is the mass measured in kg g is the gravitational field strength (10 N/Kg on Earth). eg what is the weight of a 55 kg pupil? W = m g W = W = 55 x 10 m = 55 kg W – 550 N g = 10 N/kg

1 Copy and complete this table: object mass (kg) weight (N) bag of sugar 1 bag of tatties 2.5 yourself a car 1000

2 A pupil carries a school bag, mass 5 kg, containing four books, each of mass 1 kg. What is the total weight of the schoolbag and its contents?

3 What is the weight of a small apple – mass 0.1 kg?

The weight of a certain pupil is 640 N. What is the pupil’s mass?

A car has a weight of 12 500 N. What is the mass of the car?

GRAVITATIONAL FIELD STRENGTH The gravitational field is the space around the Earth in which a mass experiences a force. At the surface that force is 10 N/kg. The force gets less as you move away from the surface because the value of the gravitational field strength gets smaller. If you were able to travel to the other planets in the solar system you would find that although your mass stayed the same everywhere you went, your weight would change because “g” has different values on the other planets. moon walking

1 Look up your mass from the previous activity and enter it in the column head m. (NB – your mass will be the same wherever you go). Using the equation W = mg, calculate your weight on each of the planets shown in the table. Complete the column headed mg. Planet g (N/kg) m (kg) mg (N) Mercury 3.7 Venus 8.9 Earth 10 (Moon) 1.6 Mars Jupiter 23 Saturn 9.0 Uranus 8.7 Neptune 11 Pluto 0.81

Use your answers to the previous question to answer the questions below. 2a Name the planet in our solar system on which you would have the greatest weight. 2b Name the planet on which you would have a weight closest to your Earth weight. 2c Name the planet on which you would have the smallest weight.

3 Watch the clip which falls faster and read the information in the planet table. On what planet would the containers have the greatest acceleration? Explain your answer.

2001 SQA General Q13. A student carries out an experiment to measure the weight of a block. The block is marked as having a mass of 1 kilogram as shown. Copy and complete the following passage. “Weight is a ................................. and is the Earth's pull on an object. The weight of a mass of 1 kilogram is ...........................................” (b) In doing the experiment, the student has the choice of the Newton balances shown below to measure the weight of the block. Which balance could not be used to measure the weight of the block? Give a reason for your choice.

2005 SQA General Q20 modified. The table below gives some information about planets and other objects in our Solar System. (a) On which two planets would a 5 kilogram mass have the same weight?