Lesson 2 — Section 1 Types of forces

• Physics
• Middelbare school
• vwo
• Leerjaar 3

Chapter 2 — Forces

Section 1 types of forces

This lesson:

• What is force?
• Types of forces
• Measuring force
• Calculating gravitational force
• Drawing force

Do the introduction questions on page 66

• 5 minutes
• We'll look at the answers togeteher
  

What is force?

What is force?

• Star wars
• Change motion

what is the effect of force?

Forces cause objects to accelerate

• Changing speed
• Changing direction
  
• Changing shape (deformation) — Plastic and elastic
  

Types of forces

Step 1 — Individually (3 min)

• Think of at least 3 different types of forces 
  
• Come up with two examples per forces

Step 2 — In pairs (3 min)

• Discuss your answers with your neighbour.
• Come up with one more type of force together and 2 new examples for it.

Step 3 — Classical discussion

Types of forces in the book

• Muscular strength
  
• Resilience (veer kracht)
  
• Tension
  
• Gravity
  
• Magnetic force
  
• Electric force
  
• Friction
  
• Air resistance
  

Measuring force

You can also calculate it

• F_g: Gravitational Force
  
• M: Mass
  
• g: gravitational field strength
  

F​g​​=m⋅g

You can also calculate it

• F_g: Gravitational Force
  
• M: Mass
  
• g: gravitational field strength
  

F​g​​=m⋅g

Drawing forces — Vectors

Forces has:

• A magnitude
• A direction
• A point of exertion

When you draw forces you first decide a force scale. 

For example: 1 cm ≡ 5 N.

Homework

All the exercises of section 1.