1-1 Introduction and forces

Introduction and forces
(p. 8)
Bluetooth 
- ON
- VPN off

Stationary
- Book and writingbook
- Pen, pencil
- Calculator
- iPad
REPORT
- NO


Lessonup
- YES
Schoolbag in
the cupboard
Phones in the phonebag
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Slide 1: Slide
NatuurkundeMiddelbare schoolvwoLeerjaar 3

This lesson contains 31 slides, with interactive quizzes and text slides.

time-iconLesson duration is: 50 min

Items in this lesson

Introduction and forces
(p. 8)
Bluetooth 
- ON
- VPN off

Stationary
- Book and writingbook
- Pen, pencil
- Calculator
- iPad
REPORT
- NO


Lessonup
- YES
Schoolbag in
the cupboard
Phones in the phonebag

Slide 1 - Slide

LESSONUP:
- Download the lessonup app from the appstore.
- Register, and type in the following classcode:
A3X - qxbwq

C3X - jncws

Slide 2 - Slide

Google classroom
A3X - v8bnxk

C3X - f347gg2

Slide 3 - Slide

Lessongoals:
  • Discussion of the class rules. 
  • Name three things forces can do.
  • Name the two types of deformation. 
  • Explain which deformation is applicable.
  • Name the types of forces.
  • Calculate gravitational force.

Slide 4 - Slide

Rules
  • We respect each other 
  • We keep the class clean
       - We dont eat in the class
       - You may have a bottle of water with you
  • We do our best 
      - Be prepared for a lesson
      - Give your best effort

Slide 5 - Slide

What do you need in every lesson:
  • For all the lessons bring an A4 writing book with 1 x 1 blocks and a textbook even when you are writing a test.
  • Keep a file for your tests and handouts (alternatively you can take a photo of the mark of your test).

Slide 6 - Slide

  • CALCULATOR, a Casio!! You are not allowed to use your mobile phone or iPad as calculator because you must learn how to use your calculator in the class. 
  • Stationary such as a pen, pencil and ruler/ geotriangle.
  • Sometimes you need a pair of compasses to draw a circle, so also have that with you. 

Slide 7 - Slide

Neatness
  • Begin a new lesson with a heading and a date in your writing book and underline your work at the end of a lesson. 
  • Write with a black or blue pen, and make diagrams and graphs with a pencil.
  • You will get a mark for your writing book.

Slide 8 - Slide

Forces can do three things:
  • Change the speed of an object
  • Change the direction of an object
  • Change the  
       shape of an
       object

Slide 9 - Slide

There are two kinds of deformation
  • Elastic deformation: 
       Original shape of an object 
       returns when force is removed.
  • Plastic deformation: 
       The deformation is 
       permanent.

Slide 10 - Slide

Types of forces:
  • Muscular strength
  • Resistance or resilience
  • Tention (rope)

  • Gravity
  • Magnetic force
  • Friction
                       or
Forces are measured with a dynamometer in Newton.
Fmusc
Fr
FT
Fgr
Ff
f

Slide 11 - Slide

Calculating gravitational force:
To calculate the gravitational force on an object we use the formula... 
F = mg 
where g = 9.8 N/kg

Slide 12 - Slide

Calculating gravity
If you have the mass of an object in kg, 
then you can calculate the force of gravity with:
mass x 9.8
Fgr

Slide 13 - Slide

Example 1
What is the gravitational force of an object with a mass of
 550 grams?

Slide 14 - Slide

Example 2
If the gravity on an object is 900 N, what then is the mass of the object?

Slide 15 - Slide

What kind of
deformation
can be seen here
A
Elastic deformation
B
Plastic deformation

Slide 16 - Quiz

What kind of
deformation
can be seen here?
A
Elastic deformation
B
Plastic deformation

Slide 17 - Quiz

What kind of deformation can be seen here?
A
Elastic deformation
B
Plastic deformation

Slide 18 - Quiz

Which of the following is NOT an effect of forces:
A
Increase speed
B
Change direction
C
Change shape
D
Attract an object

Slide 19 - Quiz

Which of the following is NOT a type of force?
A
Muscular strength
B
Mass force
C
Magnetic force
D
Resilience

Slide 20 - Quiz

What can be used to measure forces?
A
Ruler
B
Dynamometer
C
Newton scale
D
An estimation

Slide 21 - Quiz

What must be the unit of mass if you want to calculate force?
A
ton
B
kg
C
g
D
mg

Slide 22 - Quiz

When do you divide with 9,8 and when do you multiply with 9,8?

Slide 23 - Open question

What is the gravitational force on a tennis ball with a mass of 56 grams?
A
548,8 N
B
5,7 N
C
0,549N
D
0,57N

Slide 24 - Quiz

What is the mass of an antelope with a gravitational force of 2 499 N?
A
255 kg
B
2,55 kg
C
24 490 kg
D
24,49 kg

Slide 25 - Quiz

Do question 3 (p. 12)
timer
2:00

Slide 26 - Slide

Slide 27 - Slide

Do question 5 (p. 12)
timer
3:00

Slide 28 - Slide

Slide 29 - Slide

What did you
learn today?


Slide 30 - Mind map

Conclusion:
  • Forces can change the speed, direcition 
     and shape of an object.
  • With elastic deformation the object returns to its original shape and with plastic deformation the deformation is permanent.
  • Types of forces: Muscular strength, resilience, gravitational force and magnetic force.


F=ma

Slide 31 - Slide