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"The Function of Incline" Tools and Machinery PPT Download
Part One: Introduction to the new lesson
(1) The function of the inclined plane
A simple machine like a wooden plank stretched over a car cabin is called an incline.
Can beveled surfaces save effort?
Precautions:
1. What changes is the weight of the object, not the slope of the incline.
2. The pulling force of the dynamometer is uniform.
3. Analyze the experimental data, organize the group's findings and communicate intensively, and understand the role of the inclined plane.
(2) Inclined surfaces with different slopes
Discussion: Is there any relationship between the effort saving of the incline and the slope of the incline?
Conclusion: Slopes can save effort. The smaller the slope, the less effort. The larger the slope, the less effort.
Explanation: Why should winding mountain roads be built in an "S" shape?
A straight road has a steep slope, while an "S"-shaped winding road has a smaller slope due to the extension of the distance. According to the principle of inclined plane, the smaller the slope, the less effort is required.
The function of the inclined plane PPT, the second part: expansion and extension
Observation: Are the screws beveled?
A screw is an inclined plane
There are many places where bevels are used in life, such as the scissors of stationery boxes, the edges of pencil sharpeners and other knives, axes, stairs, the approaches of highway overpasses, etc., all use the bevel principle.
If two inclined planes are combined together, a simple machine that becomes a wedge is formed, such as a knife, an axe, and human incisors are all examples of wedges.
In the process of mountain climbing, the inclined surface from the top of the mountain to the foot of the mountain is called an incline, also called a slope or a hillside. Clarifying the specific shape of the slope on the map is of certain value for orienteering. The slope can be divided into:
(1) Equal slopes;
(2) Convex slope;
(3) Concave inclined surface;
(4) Corrugated slope.
The role of inclined plane PPT, part 3 content: Class summary
A simple machine like a plank of wood stretched over the bed of a car is called an incline. The slope can save effort; the smaller the slope, the less effort, and the larger the slope, the less effort.
The role of inclined plane PPT, part 4 content: classroom training
1. Fill in the blanks
1. The thread of the screwdriver is equivalent to ( ), which extends the distance and the slope becomes ( ), so the screw can be easily pushed into the wood by turning the screwdriver.
2. For example: ( ), ( ), ( ) and ( ) are all inclined planes.
2. Judgment
1. The force used to pull the same object up from an incline is less than the force used to directly lift the object vertically. ( )
2. Inclined surfaces can save effort. ( )
3. The greater the slope, the less effort is required, and the smaller the slope, the more laborious it is. ( )
4. Whether the inclined surface saves effort is related to the slope of the inclined surface. ( )
The Function of Inclined Plane PPT, Part 5: Homework
Look for places outside of the classroom where the slope principle is used.
Keywords: Free download of Chinese PPT courseware for the first volume of the sixth grade in the textbook edition, PPT download of the role of the slope, PPT download of tools and machinery, .PPT format;
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.
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