Diagram: The document is about a lawn mower. Below is the kinetic description of this device as shown in the video.

Nom : Date : Explaining a mechanism

The Lawn Mower

Cours Euro Note : 1^ère – T^ale

Page 1 sur 2

The document is about a lawn mower. Below is the kinetic description of this device as shown in the video.

Diagram:

Nom : Date : Explaining a mechanism

The Lawn Mower

Cours Euro Note : 1^ère – T^ale

Page 2 sur 2

Understanding steps:

 What would be the speed of the lawn mower if the motor was directly attached to the wheel? :

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 The narrator speaks about hurricanes. Can you explain what a hurricane is? :

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 Do you know words that can be link to hurricane? :

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 How many steps are there to reduce the speed? :

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 Give the list below:

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 Actually the belt can slip along the wheel. Why this fact is interesting rather than a drawback? :

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 What is the ratio of speed reduction? :

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 What is the purpose of the curves upon the blades? :

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 What is the speed mentioned? :

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 Why do we want to create a hurricane? :

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 How the grass is expelled outside? :

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