摩擦力(英語:friction)指兩個表面接觸的物體相對滑動時抵制它們的相對移動的力,是經典力學的一個名詞。廣義地,物體在液體和氣體中運動時也受到摩擦力。
摩擦力產生的情形:
一物體在另一個物體表面上滑動或將要滑動時,兩個物體在接觸面上會產生阻止相對運動的作用力,這種作用力稱為摩擦力。
物體在靜止或運動狀態,均可能在接觸面上產生摩擦力。
摩擦力與物體相對運動的方向相反。
在您的日常生活中發現科學的樂趣和興奮!
為什麼水卡不會掉出水杯?
顛倒的水伎是由於氣壓來保持水和紙,這是孩子們在家裡做的簡單的科學實驗。
Upside down water trick| fun experiments for kids
Discover the fun and excitement of science in your everyday life!
Why doesn't the water fall out of the cup with the card?
The upside down water trick is due to the air pressure to hold the water and paper, it is easy science experiment for kids to do at home.
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easy card games to program 在 MakeLearningFun Youtube 的最佳貼文
Discover the fun and excitement of science in your everyday life!
Why the foam stick to the tube and Why it fly when your finger touch outside the tube?
Why doesn't the water fall out of the cup with the card?
The upside down water trick is due to the air pressure to hold the water and paper, it is easy science experiment for kids to do at home.
What is friction? We will do a fun experiment to explain, hope your kid enjoy :D
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