تبلیغات
چهار سوی علوم - تعریف نیرو(FORCE)
سه شنبه 26 بهمن 1389  09:31 ب.ظ
توسط: حسام

کشش و رانش را نیرو میگویند.

نیرو ها را به کمک اثر هایی که بر یک جسم میگذارند شناسایی و نامگذاری میکنند.مانند:

نیروی گرانشی:نیرویی که باعث میشود دو جسم هم دیگر را بربایند.

نیروی مغناطیسی:نیروی ربایشی یا رانشی است که بین دو قطب مغناطیسی وجود دارد.

نیروی کشسانی:وقتی فنره را می کشیم یا می فشاریم فنر نیز بدست ما نیرو وارد میکند.

نکته:برای بررسی حرکت یک جسم باید نیروهایی را که بر آن وارد میشوند را اندازه بگیریم.برای اندازه گیری نیرو هم باید عوامل موثر بر آن را معلوم کنیم که به وسیله ی قانون های نیرو امکان پذیر است.


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