"The Function of Inclined Planes" Tools and Machinery PPT Courseware 5

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"The Function of Inclined Planes" Tools and Machinery PPT Courseware 5

doubt

Why do mountain roads have to be winding? What are the benefits of this?

Experiment and Think

Is there any way you can move the drums onto the truck without a big machine?

Exploration 1 What is the function of the inclined plane?

Ask the question: What does the bevel do?

Make an assumption: Inclined surfaces save effort. Inclined surfaces can...

Gather evidence:

Conclusion: Inclined surfaces save effort

Can slopes save effort?

1 Physical quantities to be measured: the force required to directly lift a heavy object, the force required to pull a heavy object along an incline

2 Experimental equipment: spring balance, weights, incline

3 Controlled variables: directly lifting heavy objects and lifting heavy objects along an incline

Kind tips:

1. You can only change the weight of the object, but not the height of the incline.

2. The requirement of pulling the dynamometer is to move in a straight line at a constant speed and read while pulling.

3. Pay attention to group cooperation and record while experimenting.

Study slopes of different slopes

Ask the question Does the force used to pull an object along an incline vary with the slope?

Make an assumption. It may be related to the inclination of the slope.

Make a plan (design an experiment)

I am the best

Why do mountain roads have to be winding? What are the benefits of this?

The winding mountain road forms an S shape, which can effectively reduce the slope of the slope and achieve a more labor-saving effect, allowing cars to climb up and drive easily.

judge

1. Compared with going up the mountain directly and going up the winding road, the former is laborious but takes a shorter distance, while the latter saves effort but takes a longer distance. ( )

2. The use of inclined surfaces saves effort. ( )

3. The screwdriver is made using only the principle of bevel. ( )

4. By placing a wooden board on wooden blocks of different heights, you can make several slopes with different slopes. ( )

5. Screws are made by applying the principle that inclined surfaces can save labor. ( )

inclined plane

1. The above ( ) is the most labor-saving.

2. The thread of the screw is a deformation of the bevel. Screws of the same thickness have denser threads when screwed into wood ( ).

A. The more effort B. The less effort C. Difficult to judge

3. Among the following items, the ones made using the bevel principle are ( ).

A. Seesaw B. Wrench C. Stair lift in shopping mall

4. As shown in the figure, use a dynamometer to pull the same object along the two surfaces A and B to the same height (the smoothness of the two surfaces A and B are the same), and the reading of the dynamometer will be. ( )

A. The same size B. The reading is larger when pulling on side A C. The reading is larger when pulling on side B

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For more information about the PPT courseware "The Function of Tools and Machinery Slopes", please click the "The Function of Tools and Machinery ppt Slopes" ppt tag.

Download "The Function of Inclined Plane" Tools and Machinery PPT:

"The Function of Inclined Plane" Tools and Machinery PPT Download Part One: New Lesson Explanation (1) The Function of Inclined Plane A simple machine like a wooden board placed on a car compartment is called an inclined plane. Can beveled surfaces save effort? Notes: 1. What changes is the weight of the object,...

"The Function of Inclined Planes" Tools and Machinery PPT:

"The Function of the Slope" Tools and Machinery PPT Part One: What is the Function of the Slope? Which method do you choose to move the barrel to the high platform? People often set up a slope between a low place and a high place to move heavy objects from a low place to a high place. This slope is called an incline. ..

"The Function of Inclined Planes" Tools and Machinery PPT Courseware 4:

"The Function of Inclined Plane" Tools and Machinery PPT Courseware 4 Put a wooden board between the carriage and the ground to form an inclined plane. Place the object on this surface and push or pull it up along the surface. This surface becomes a kind of inclined surface in a simple machine. Do you think it's oblique...

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Update Time: 2024-11-16

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

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