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أنواع الروافع.pptx
1.
الروافع أنواع للقي مساعدته
في ساهمت تيّلا البسيطة اآلالت من العديد اإلنسان اخترع لقد بالعديد ام اآلالت أولى وافعّالر ّدوتع ،ويسر ٍةسهول ّلبك ،ةّقوالشا الصعبة ّمالمها من تيّلا البسيطة الزمان قديم منذ اإلنسان اخترعها . ويسمى تحريكه المراد والجسم ،مستقيمة متينة ٍساق من الرافعة نّتتكو " ا لمقاومة " ، النقطة وهي ،االرتكاز ونقطة ،الجسم لتحريك الشخص بها رّثيؤ التي ةّوالقو يرتكز يّتال الساق عليها . الرافعة خصائص س من نةّمكو بسيطة ٌآلة هاّنأ على افعةّالر أرخميدس اليوناني العالم فّعر ًةمرتكز ٍاق ،االرتكاز نقطة وتسمى ،ثابتة ٍةنقط على
2.
الروافع انواع
3.
التالية الوظائف
بإحدى القيام خالل من المهام لّهتس هاّنأ ةّيالرئيس الرافعة مهام من أكثر أو : وذلك ،صغيرة ٍةّقو استخدام طريق عن ،المبذول الجهد الروافع أنواع بعض رّفتو حيث ،القوة تكبير كالعتلة كبير ٍلثق لتحريك . المسافة تكبير : ذراع كّحرُت وبالتالي ،صغيرة ٍةمساف خالل ٍةقو ببذل الروافع أنواع بعض تقوم ةّياليدو المكنسة عليها مثال ،كبيرة ًمسافة المقاومة . الي كالمكنسة ،الشغل لبذل الشخص انحناء من ًالبد آخر إلى ٍمكان من ةّالقو انتقال ّميت ،ةّالقو نقل ةّيدو . متناهية ٍةّقبد الصغيرة األشياء على الحصول ّمويت ،الملقط استخدام خالل من ،العمل في الدقة . أو ،البرودة أو ،الحرارة من اإلنسان حماية على الفحم ماسك يساعد حيث ،المخاطر عن االبتعاد ةّمالسا المواد . ،ةّبقو عليها رةّثالمؤ األجسام سرعة زيادة على الروافع أنواع بعض تعمل ،السرعة في الزيادة الهوكي لعبة كمضرب . الروافع أهمية
4.
5.
األول النوع روافع : والمقا
ةّالقو بين االرتكاز محور فيها يكون تيّلا الروافع وهي ،ومة المقاومة ذراع من أكبر ةّالقو ذراع تكون عندما ةّيآل فائدة لها وتكون ، ،ًامع والوقت الجهد رّفتو وبالتالي النوع هذا على األمثلة ومن : واألرجوحة ،تينّفالك ذو والميزان ،والعتلة ،المقص . الروافع أنواع
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