# Lesson 2 — Section 1 Types of forces

Chapter 2 — Forces
Section 1 types of forces
This lesson:
• What is force?
• Types of forces
• Measuring force
• Calculating gravitational force
• Drawing force
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Slide 1: Slide
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This lesson contains 13 slides, with text slides.

Lesson duration is: 45 min

## Items in this lesson

Chapter 2 — Forces
Section 1 types of forces
This lesson:
• What is force?
• Types of forces
• Measuring force
• Calculating gravitational force
• Drawing force

#### Slide 1 -Slide

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Do the introduction questions on page 66
• 5 minutes
• We'll look at the answers togeteher

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What is force?

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What is force?
• Star wars
• Change motion

what is the effect of force?

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Forces cause objects to accelerate
• Changing speed
• Changing direction
• Changing shape (deformation) — Plastic and elastic

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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)
• Come up with one more type of force together and 2 new examples for it.

Step 3 — Classical discussion

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Types of forces in the book
• Muscular strength
• Resilience (veer kracht)
• Tension
• Gravity
• Magnetic force
• Electric force
• Friction
• Air resistance

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Measuring force

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You can also calculate it

• Fg: Gravitational Force
• M: Mass
• g: gravitational field strength
Fg=mg

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You can also calculate it

• Fg: Gravitational Force
• M: Mass
• g: gravitational field strength
Fg=mg

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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.

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Homework
All the exercises of section 1.

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