"Pulleys and Axles" Construction and Simple Machinery PPT Courseware

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People's Education Press Fifth Grade Science Volume 1	pptx	6 MB

"Pulleys and Axles" Construction and Simple Machinery PPT Courseware

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Upload Time: 2024-11-22

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"Pulleys and Axles" Construction and Simple Machinery PPT Courseware

axle

The faucet is a tool that every household has. It can effectively control the flow of water.

A device like a faucet consisting of a wheel and an axle is called an axle.

Applications of wheels and axles in life

What is the function of the axle?

Why can a car, no matter how big it is, change its direction as long as the driver gently turns the steering wheel?

Say it saves effort

Think about it, why does it require greater strength to operate without a handle?

The force is applied to the shaft, and the shaft drives the wheel. The force used is large and laborious.

Force is applied to the wheel, and the wheel drives the shaft, so the force used is small and labor-saving;

Study the role of the wheel and axle

Conclusion: Hanging a few hook codes on the wheel can pull a lot of hook codes on the shaft, which proves that using a small force on the wheel can pull a large force on the shaft, that is to say, exerting force on the wheel Save effort and strain on the shaft.

The effect of wheel size on the wheel axle

Are bigger wheels more labor-saving?

The relationship between wheels and axles:

The axis remains unchanged, and the larger the wheel, the easier it is to work. (experiment)

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Update Time: 2024-11-22

This template belongs to science courseware People's Education Press Fifth Grade Science Volume 1 industry PPT template

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"Pulleys and Axles" Construction and Simple Machinery PPT Courseware