"Scientific Inquiry: Friction" Familiar and Unfamiliar Forces PPT Courseware 3

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Shanghai Science Edition 8th Grade Physics	pptx	6 MB

"Scientific Inquiry: Friction" Familiar and Unfamiliar Forces PPT Courseware 3

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Upload Time: 2024-11-23

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Description

"Scientific Inquiry: Friction" Familiar and Unfamiliar Forces PPT Courseware 3

The force that hinders the relative motion of an object when an object slides on the surface of another object is called sliding friction.

Do it

1. Put your hand on the table and slide it. What do you think should be done to increase the sliding friction force on your hand? Give it a try.

2. Hold the penholder and slide it on the paper and the desktop respectively. Feel the difference in the friction force between the two times?

Based on the above activities and related to the reality of life, what factors do you think sliding friction is related to? Tell me your basis.

Conjectures and Assumptions

Reasonable guess based on life experience

Possibly and? ? The basis for me is...

The possible relationship is…

Analysis and Demonstration

The contact surface has a certain degree of roughness.

The magnitude of sliding friction is related to pressure,

The greater the pressure, the greater the friction.

The pressure is certain,

The size of the sliding friction force is related to the roughness of the contact surface. The rougher the contact surface, the greater the friction force.

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For more information about the "Familiar and Unfamiliar Forces Scientific Exploration of Friction" PPT courseware, please click the Familiar and Unfamiliar Forces ppt Scientific Exploration of Friction ppt tag.

"Scientific Inquiry: Friction" Familiar and Unfamiliar Forces PPT Courseware 4:

"Scientific Exploration: Friction" Familiar and Unfamiliar Forces PPT Courseware 4 1. When a bicycle slides on a level road, no matter how smooth the road surface is, it will gradually slow down and finally stop. 2. After the car brakes, the car will also Stop slowly. Think: People all the time...

"Scientific Inquiry: Friction" Familiar and Unfamiliar Forces PPT Courseware 2:

"Scientific Exploration: Friction" Familiar and Unfamiliar Forces PPT Courseware 2 1. Friction Sliding Friction Static Friction Rolling Friction Sliding Friction The force that hinders the relative motion of an object when an object slides on the surface of another object. It's called sliding friction.

"Scientific Inquiry: Friction" Familiar and Unfamiliar Forces PPT Courseware:

"Scientific Exploration: Friction" Familiar and Unfamiliar Force PPT Courseware [Experience 1] The existence and magnitude of friction Activity: Place your palm flat on different contact surfaces to experience different feelings Activity 1: Place your palm flat on the table Go up, without exerting force; Activity 2: Continue to exert force..

File Info

Update Time: 2024-11-23

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"Scientific Inquiry: Friction" Familiar and Unfamiliar Forces PPT Courseware 3