"Gong" Work and Mechanical Energy PPT Courseware 5 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Gong" Work and Mechanic... | 12550次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Gong" Work and Mechanical Energy PPT Courseware 5 is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Gong" Work and Mechanical Energy PPT Courseware 5, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Gong" Work and Mechanical Energy PPT Courseware 5
The explanation of gong:
"Gong" is a polysemous word. It means "contribution", such as meritorious service; it also means "efficiency", such as success, getting twice the result with half the effort... Students can also list other meanings. For example, great achievement means contribution, and for example, success means achievement, effect, and effectiveness. The "gong" mentioned in mechanics includes the meaning of effectiveness, but it also has a more precise meaning.
Work in physics mainly focuses on the meaning of "efficiency, effect", and of course its own physical meaning.
What is called gong
Mechanics mainly studies the relationship between "force and motion". "Work" refers to:
If a force acts on an object and the object moves a certain distance in the direction of the force, the effect of the force will be effective, and it is said that the force has done work on the object. Function symbol W represents. (WORK)
"Two necessary factors" means "one cannot exist without the other"
1. Are you tired when you are holding a basin of water without moving? Did you do your job? Why?
2． I pushed the podium hard but it didn't move. Are you tired? Did people do their work?
3. A football is kicked with the foot and the ball rolls on the ground. During the rolling process, does the person do any work on the ball?
4. When a person pushes a wooden box forward, does the box's gravity and supporting force do any work? Why?
5． A person lifts a bucket of water and moves forward in a horizontal direction. Does the lifting force perform work?
Consolidation exercises
1. Fill in the blanks: The two necessary factors for doing work are:
① _____ acting on an object.
②The object passed through a section of ______ on ______.
2. Determine whether the following forces do work on the object?
(a) The person pushed the car hard, but did not push.
(b) The bird picked up the bug from the ground.
Calculation of work
Mechanics stipulates that work is equal to the product of the force and the distance traveled by the object in the direction of the force.
Calculation formula: work = force × distance moved in the direction of force W = Fs
The meaning and unit of the symbol:
W-----Work-----Joule (J)
F-----Force-----Newton (N)
s-----distance-----meter (m)
Expressed in words: 1 Joule = 1 Newton × 1 meter
Meaning: If a force of 1 N is used to move an object 1 meter in the direction of the force, the work done by the force on the object is 1 Joule.
Comprehensive application of formula W=FS
1. It is necessary to clarify which force does work on which object, or which force-exerting object does work on which force-receiving object.
2. Isobody: The force and the distance the object moves must correspond to the same object
3. Simultaneity: The force and the moving distance of the object must correspond to the same time.
4. Isotropy: At the junior high school stage, the force and the moving distance of the object must be consistent in direction.
practise
1. When a weightlifter holds the barbell motionless, the lift does work.
2. A person lifts a heavy object and moves it at a constant speed in the horizontal direction for a certain distance. The lifting force does work on the heavy object.
3． When an apple falls from the tree, gravity does work on the apple.
4. The ball moves a certain distance on a smooth surface, and the support force of the table does work on the ball.
Keywords: work and mechanical energy teaching courseware, work teaching courseware, New People's Education Edition eighth grade physics PPT courseware for the second volume, eighth grade physics slide courseware download, work and mechanical energy PPT courseware download, work PPT courseware download, .ppt format
For more information about the "Work and Mechanical Energy" PPT courseware, please click on the "Work ppt Work and Mechanical Energy ppt" tab.
"Structure and Function of Cell Nucleus" PPT courseware on the basic structure of cells:
"The Structure and Function of the Cell Nucleus" PPT courseware on the basic structure of the cell Part 1: Pre-class independent study plan 1. Distribution and function of the cell nucleus 1. Distribution: Except for a few cells such as mature __________ of higher plants and ________ of mammals, eukaryotes...
"Structure and Function of Cell Nucleus" Basic Structure of Cells PPT:
"Structure and Function of Cell Nucleus" Basic Structure of Cells PPT Part One Content: Foundation of Essential Knowledge Literacy 1. Experiments to Explore the Function of Cell Nucleus 1. Black and White Axolotl Nuclear Transplantation Experiment: (1) Experimental Process: (2) Experiment Conclusion: The skin color of axolotl is affected by the cell nucleus.
"Structure and Function of Cell Membrane" PPT courseware on the basic structure of cells:
"Structure and Function of Cell Membrane" PPT courseware on the basic structure of cells Part 1: Independent preview 1. Function of cell membrane 1. Separate the cell from the external environment and make the cell a ________ system to ensure the relative stability of the cell ________. 2..