Lesson 5

Chapter 2 — Forces

Section 2 more than one force

This lesson:

Recap
Section 2
Homework

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Slide 1: Slide

PhysicsMiddelbare schoolvwoLeerjaar 3

This lesson contains 22 slides, with text slides.

Lesson duration is: 45 min

Items in this lesson

Chapter 2 — Forces

Section 2 more than one force

This lesson:

Recap
Section 2
Homework

Slide 1 - Slide

What is force?

Force can accelerate objects
Change the direction of a moment
Change the shape of an object (plastic and elastic deformation)

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What is a vector?

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What is a vector?

A force vector always has three things:

A magnitude
A direction
A point of exertion

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center of gravity

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You can also calculate it

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

F^{​ g ​ ​} = m \cdot g

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Practice exercise

A cat ended up on a planet, but we're not sure which one. Astronauts know that the cats mass is 6,3 kg. Their weight on this planet is 88,641 N.

Which planet did the cat end up on?

Use the table to the right to find the answer.

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Section 2 – More than one force

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Resultant force

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Resultant force

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Resultant force

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Use the parallelogram method do do exercise 8

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Force and extension

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Force and extension

Link

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Force and extension

Link

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Force and extension

C = \frac{​ F ​ ​}{​ x ​}

C: Spring constant (in N/m)

F: Force (in N)

x: Extension (in m)

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Homework

Section 2:

Exercise 5, 6, 7, 8 and 9

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Lesson 5

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