What impact do gears, levers and pulleys have on forces?
In this lesson, we will first aim to understand the purpose of simple machines. We will then focus on gears, levers and pulleys to find out how they work and how they can be useful. We will also complete some questions throughout the lesson which will help us check our understanding.
What impact do gears, levers and pulleys have on forces?
In this lesson, we will first aim to understand the purpose of simple machines. We will then focus on gears, levers and pulleys to find out how they work and how they can be useful. We will also complete some questions throughout the lesson which will help us check our understanding.
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Lesson details
Key learning points
- Describe what gears, levers and pulleys are
- Explain why gears, levers and pulleys are helpful, and give some examples
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4 Questions
Q1.
Upthrust is also known as...
Air resistance
Gravity
Q2.
What would have a higher density?
A basketball
A beach ball
Q3.
If the upthrust is less than the weight of the object, the object will
Float
Rise
Q4.
If the upthrust is equal to the weight of the object, the object will...
Rise
Sink
4 Questions
Q1.
Which of these is NOT an example of a simple machine?
Gears
Levers
Pulleys
Q2.
Which of these items uses a lever?
Bicycle
Crane
Sofa
Q3.
Which of these items uses a pulley system?
Bicycle
Scissors
Sofa
Q4.
Which of these items uses gears?
Crane
Scissors
Sofa