Knowledge is power ,

sharing knowledge is powerful

بوسى
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منذ 7 سنوات
اجابة  0   مشاهدة  3

ترك جسم كتلته كجم ليهبط من السكون على خط اكبر ميل لمستوى خشن يميل 

على الافقى بزاوية جيبها  \frac{3}{5} .

اذا اصبحت سرعة الجسم 4.9 م / ث بعد  2.5 ث من بدء الحركة فاوجد معامل

الاحتكاك الحركى بين الجسم المستوى 

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