"The Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 4 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 |
|---|---|---|---|
| "The Force from the Eart... | 1975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 "The Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 4 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
"The Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 4, 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
"The Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 4
Observe and think:
1: Release a heavy object freely
2: Throw an object horizontally
3: Observe a picture of water flowing downwards
Phenomenon Why does the following phenomenon occur?
1: The heavy object falls vertically,
2: The thrown object falls back to the ground,
3: The waterfall flows from high to low.
in conclusion:
1: It turns out that all objects near the surface of the earth are attracted by the earth.
2: In physics, the force exerted by an object due to the attraction of the earth is called gravity.
Thinking: How to understand gravity?
Gravity is the attraction of the earth to objects. Therefore, the object exerting force by gravity is the earth, and the object receiving force is all objects near the surface of the earth.
In physics, the amount of gravity exerted by an object is also called its weight.
Observe and think:
1: What do masons use to check whether a wall is straight?
2: What do masons use to check whether the window sill is level? Is the door frame placed correctly?
3: How do we check whether the paintings on the wall are hung correctly?
Conclusion: Use heavy vertical lines
Because when a heavy object is hung under a line, after the weight is stationary, under the action of gravity, the direction of the hanging line is consistent with the direction of gravity.
Thinking: What is the direction of the hanging line? What is the direction of gravity?
The direction of gravity is vertically downward.
Consolidation exercises:
1: What forces act on an ink bottle placed on a horizontal table? What are the force-exerting objects?
2: As shown in the figure below, an object weighing 32N is placed on an inclined plane, and the force diagram represents the gravity exerted on it.
3: As shown in the picture, you can see the weight limit sign as shown in the picture on the bridge head (t means tons). It indicates how many oxen is the heaviest car allowed to pass on this bridge?
4: There is an object with a weight of 39.2N. Can I use a scale with a maximum weighing capacity of 500g to determine its mass?
It is known that the mass of the cars allowed to pass through this bridge is m=30t=30000kg
The gravity constant is g=9.8N/kg
Find: G the gravity of the cars allowed to pass through this bridge
Solution: From G=mg=30000kg×9.8N/kg=294000N= 2.94×105N
Answer: The gravity of the cars allowed to pass through this bridge is 2.94 × 105N
Known: The gravity of this object is G=39.2N
The gravity constant is g=9.8N/kg
Find: the mass m of this object. Then compare it with the maximum weighing capacity of the balance, 500g.
Solution: From m=G/g=39.2N/9.8N/kg=4kg=4000g>500g
Therefore, this object cannot be weighed on a balance with a maximum weighing capacity of 500g.
Keywords: Familiar and unfamiliar force teaching courseware, force teaching courseware from the earth, Shanghai Science Edition eighth grade physics PPT courseware download, eighth grade physics slide courseware download, familiar and unfamiliar force PPT courseware download, from the earth Li PPT courseware download, .PPT format;
For more information about the PPT courseware "Familiar and Unfamiliar Forces Come from the Earth", please click on the "Familiar and Unfamiliar Forces PPT Forces from the Earth" PPT tag.
"Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 5:
"Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 5 1. What is gravity? The force exerted on an object due to the attraction of the earth. 2. The calculation formula for the size of gravity G=mg (g=9.8N/kg) 3. The direction of gravity The direction of the four gravity forces is always vertical downward..
"Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 3:
"Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 3 1. Gravity The force exerted on objects due to the attraction of the earth The force exerted by gravity is: Earth's water always flows from high to low. Apples always fall to Ground 2. Description of Gravity 1. In life, objects are often...
"Force from the Earth" Familiar and Unfamiliar Forces PPT Courseware 2:
"Force from the Earth" Familiar and Unfamiliar Force PPT Courseware 2 [Experience] Gravity Activity 1: Hold the rubber with your hand, let go and then fall, and observe the movement of the rubber. Activity 2: Throw the rubber upward and observe the movement of the rubber. The rubber eventually falls to _________..