12 Questions
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# Wheels and Levers Test 32: Simple Machines

Created by
@AlluringOganesson

## Questions and Answers

### What is the main function of a fixed pulley?

changing the direction of the force

### Where should the fulcrum be positioned when using a class 1 lever to lift a load?

closest to the load

### What is the key characteristic of a second class lever?

the load is in the middle

### What is the term for the point where a lever pivots?

<p>fulcrum</p> Signup and view all the answers

### What is an example of a wheel and axle in everyday life?

<p>roller blades</p> Signup and view all the answers

### What is the relationship between the distance the lever moves and the effort required, when using a lever?

<p>as the distance the lever moves is increased, the effort decreases</p> Signup and view all the answers

### What is the characteristic of a class 1 lever that allows it to be balanced?

<p>The same amount of weight on both sides.</p> Signup and view all the answers

### What is the purpose of a belt system in mechanics?

<p>To transfer motion between wheels or gears.</p> Signup and view all the answers

### What is required for the wheels to move in opposite directions in a belt system?

<p>The belt must twist or cross over.</p> Signup and view all the answers

### Why do the teeth of gears need to be the same size?

<p>So that they can mesh properly and transfer motion smoothly.</p> Signup and view all the answers

### What determines the class of a lever (class 1, 2, or 3)?

<p>The position of the fulcrum, effort, and load.</p> Signup and view all the answers

### What is the role of the fulcrum in a lever system?

<p>It is the pivot point around which the lever rotates.</p> Signup and view all the answers

## Study Notes

### Types of Levers

• A Class 1 lever has the same amount of weight on both sides to be balanced.
• A Class 2 lever has the load in the middle.

### Pulleys

• A fixed pulley makes work easier by changing the direction of the force.
• A moveable pulley helps do work by changing the amount of effort needed to lift the force.

### Levers in Real World

• Examples of levers in real world include paint roller and roller blades.

### Fulcrum, Effort, and Load

• The fulcrum is the point in which a lever pivots.
• To use a Class 1 lever to lift a load, the fulcrum should be closest to the load.

### Gears

• The teeth of gears need to be the same size.
• The direction of gear movement can be determined by the direction of rotation of the drive gear.

### Belts and Wheels

• A belt system can be designed to show wheels driving in the same direction and speed.
• A belt system can be designed to show wheels driving in different speeds and directions.
• To make wheels move in opposite directions, the belt system needs to be changed.

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## Description

Test your understanding of simple machines with this fill-in-the-blank and multiple-choice quiz on wheels and levers, including types of levers and how they work. Score 11 marks by answering questions about loads, fulcrums, and more!

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