حلول التدريبات العملية ديناميكا لجسم واحد

تؤثر على الجسم ثلاث قوى: القوة الخارجية F، قوة الجاذبية والقوة العمودية.

نرسم مخطط القوى:

في الاتجاه العمودي للسطح يكون الجسم في وضع اتّزان، نكتب معادلات الحركة في اتجاه المحور :Y 

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في اتجاه نحو أسفل السطح المائل لا  يكون الجسم في وضع اتّزان، بل يتحرك بتسارع. نكتب معادلات الحركة في اتجاه المحور:X 

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نعبر عن تسارع الجسم من معادلة الحركة في اتجاه المحور X:

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