حلول التدريبات العملية 3- مسارات رأسية

نرسم مخططًا للقوى المؤثرة على الجسم عندما يكون في النقطة B: 

نختار هيئة محاور: المحور X في الاتجاه المماسي والمحور Y في الاتجاه نحو مركز الدوران. 

نكتب معادلات الحركة:

 في الاتجاه المركزي (اتجاه المحور Y) وفي الاتجاه المماسي :

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نعبر عن القوة العمودية من معادلة الحركة نحو المركز (الرادياليت): 

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