"The Science of Leverage" Tools and Machinery PPT download

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"The Science of Leverage" Tools and Machinery PPT download

Part One: Understanding Leverage

Place a supporting object underneath a stick and use it to lift heavy objects. People call such a stick a crowbar.

Simple machines like crowbars are called levers

There are three important positions on the lever

The position that supports the lever and allows the lever to rotate around it is called the fulcrum;

The point where force is exerted on the lever is called the force point;

The point where resistance is overcome is called the resistance point.

Different leverage tools often have different positions of the three points used as leverage.

The key to judging whether a tool is leverage is to judge whether the tool has three important positions.

The Science of Leverage PPT, Part 2: Expansion and Extension

A lever is a simple machine. In physics, levers are divided into three categories: the first category of levers, such as crowbars and scissors... This type of lever may be labor-saving or labor-intensive, or it may be neither labor-saving nor labor-intensive. The second type of levers, such as bottle openers, juicers... This type of levers are labor-saving. The third type of levers, such as tweezers, barbecue tongs... This type of lever is always laborious.

Effortless lever: effort saves distance, such as fishing rods, human arms, etc. are all effortful levers, but they save a lot of distance.

The Science of Leverage PPT, Part 3: Class Summary

A simple machine like a crowbar is a lever. There are three important positions on the lever. The positions of the three points determine whether the lever is effortless.

The Science of Leverage PPT, Part 4: Training in the Classroom

1. Fill in the blanks

1. Effortless lever: effort saves distance, ( ) and ( ) are effortful levers.

2. Make a lever so that the position around which the lever rotates is called ( ); the position where force is exerted on the lever is called ( ); and the position on the lever that overcomes resistance is called ( ).

2. Choice

1. The following ( ) is not leverage

A. Seesaw B. Pressure well

C. Fishing rod D. Screwdriver

2. Which of the following statements is wrong ( )

A. To determine whether an instrument is leverage, the key to determine whether the instrument has three important positions

B. A crowbar is a simple machine

C. The distance between the force point and the fulcrum is greater than the distance between the resistance point and the fulcrum, which is a labor-saving lever.

D. The awl and the rolling pin are both levers

The Science of Leverage PPT, Part 5: Homework

Looking for tools in life that are leverage? Which levers are labor-saving levers? What are effort levers? What are the levers that are effortless and effortless?

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For more information about the "Science of Tools and Mechanical Lever" PPT courseware, please click the "Science of Tools and Mechanical Lever ppt" tab.

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Update Time: 2024-11-22

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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