حل التدريبات العملية: الحركة التوافقية البسيطة في نابض أفقي وبندول بسيط

نحسب سرعة الجسم في النقطة B باستخدام دالة السرعة كدالة للزمن:

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يصل الجسم إلى النقطة B بعد ربع زمن دورة. في لحظة بداية الحركة، يكون الجسم في نقطة الطرف الموجب، ولذلك فإن قيمة زاوية الطور الابتدائية تساوي صفرًا.

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نحسب سرعة الجسم في النقطة B باستخدام دالة السرعة كدالة للموقع:

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في المرة الأولى التي يمر فيها الجسم في النقطة B، يكون متحركًا بعكس اتجاه الحركة، ولذلك فإن سرعته سالبة «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨18px¨»«msub»«mi mathvariant=¨bold¨ mathcolor=¨#0000FF¨»V«/mi»«mi mathvariant=¨bold¨ mathcolor=¨#0000FF¨»B«/mi»«/msub»«mo mathvariant=¨bold¨ mathcolor=¨#0000FF¨»=«/mo»«mo mathvariant=¨bold¨ mathcolor=¨#0000FF¨»-«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#0000FF¨»2«/mn»«mo mathvariant=¨bold¨ mathcolor=¨#0000FF¨».«/mo»«mn mathvariant=¨bold¨ mathcolor=¨#0000FF¨»73«/mn»«mfrac mathcolor=¨#0000FF¨»«mi mathvariant=¨bold¨»m«/mi»«mi mathvariant=¨bold¨»s«/mi»«/mfrac»«/mstyle»«/math».