Knowledge is power ,

sharing knowledge is powerful

بوسى
..
منذ 7 سنوات
اجابة  0   مشاهدة  17

جسم كتلته 60 جم موضوع على نصد افقى  خشن ثم وصل  بخيط خفيف يمر على بكرة صغيرة ملساء 

عند حافة النضد وحمل فى طرفه جسما كتلته 38 جم يتدلى راسيا  فاذا تحركت المجموعة من السكون 

وقطعت مسافة 70 سم فى ثانية واحدة . احسب معامل الاحتكاك 

...........................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

اضف اجابتك