مذكرة الديناميكا

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‫ﻟﻸﺳﺘﺎﺫ ﺍﻟﻘﺪﻳﺮ ‪ /‬ﻋﻠﻰ ﺍﻟﺪﻳﻦ ﻳﺤﻴﻰ ‪٠١١١٩٦٦٠٦١٦‬‬

‫ﻣﺮﺍﺟﻌﺔ ﺍﻟﺪﻳﻨﺎﻣﻴﻜﺎ ﻟﻠﺼﻒ ﺍﻟﺜﺎﻟﺚ ﺍﻟﺜﺎﻧﻮﻯ‬ ‫· وﺣﺪات ا‬

‫‪ ‬‬

‫‪ ‬‬

‫ﻋﺔ )ﻉ ( ‪:‬‬

‫‪ ‬‬

‫‪50‬ﺫ‬ ‫ﻛﻢ ‪ /‬ﺱ = ‪ 5‬ﻡ ‪ /‬ث =‬ ‫‪9‬‬ ‫‪18‬‬

‫‪ ‬‬

‫ﺳﻢ ‪ /‬ث‬

‫· اﻹزاﺣﺔ ) ف ﰒ( ‪:‬‬

‫· وﺣﺪات اﻟﻌﺠﻠﺔ )ﺝ( ‪:‬‬

‫ﻮﺿﻊ ا ﺴﻢ ‪ ،‬ف ﰒ = ﻣﻢ ‪ O‬ﰒ = ‪ O‬ﰒ – ‪٠ O‬ﰒ‬ ‫ا ﻐ‬ ‫ً ً‬ ‫ً‬ ‫و ﻮن ﻮﺟﺒﺎ أو ﺳﺎ ﺎ ﺗﺒﻌﺎ ﻻ ﺎه ﻣﺘﺠﺔ وﺣﺪة ) ى ﰒ( ‪.‬‬

‫ﻛﻢ ‪ /‬ﺱ ‪ /‬ث = ‪ 5‬ﻡ ‪ /‬ث‪50 = ٢‬ﺫ ﺳﻢ ‪ /‬ث‪٢‬‬

‫‪18‬‬

‫‪9‬‬

‫· وﺣﺪات ا ﻜﺘﻠﺔ )ﻙ( ‪:‬‬ ‫ﻃﻦ = ‪ ١٠٠٠‬ﻛﺠﻢ‬

‫ﻋﺔ ) ﻉ ﰒ( ‪:‬‬

‫· ﻣﺘﺠﻪ ا‬ ‫ً‬ ‫ﺟ ﺎ ‪ :‬ﻫﻮ ﻣﻌﺪل ﺗﻐ ﻣﺘﺠﻪ ا ﻮﺿﻊ ﺑﺎﻟ ﺴﺒﺔ ﻠﺰﻣﻦ ) ‪( OÙ‬‬

‫‪ ،‬ﻛﺠﻢ = ‪ ١٠٠٠‬ﺟﻢ‬

‫أ‪ ،‬ﻣﻌﺪل ﺗﻐ اﻹزاﺣﺔ ﺑﺎﻟ ﺴﺒﺔ ﻠﺰﻣﻦ ) ‪. ( [Ù‬‬

‫· وﺣﺪات ﻛﻤﻴﺔ ا ﺮ ﺔ )ﻣـ( ‪ :‬ﻣـ = ﻙ × ﻉ‬

‫‪°Ù‬‬

‫ﻃﻦ ‪ .‬ﻛﻢ ‪ /‬ﺱ ‪ ،‬ﻛﺠﻢ ‪ .‬ﻣ ‪ /‬ث ‪ ،‬ﺟﻢ ‪ .‬ﺳﻢ ‪ /‬ث‬

‫· وﺣﺪات ﻣﻌﺎدﻟﺔ ا ﺮ ﺔ ‪ :‬ﻕ = ﻙ ﺝ‬ ‫‪ /‬ث‪٢‬‬

‫أ‪،‬‬

‫ﻧﻴﻮﺗﻦ = ﻛﺠﻢ ‪ .‬ﻣ‬ ‫ً‬ ‫) ﻋﻠﻤﺎ ﺑﺄن ‪ :‬ﻧﻴﻮﺗﻦ = ‪ ٥ ١٠‬داﻳﻦ (‬

‫ً‬ ‫ﺑﻴﺎﻧﻴﺎ ‪ :‬ﻫﻮ ﻣﻴﻞ ا ﻤﺎس ﻨﺤ ) ا ﻮﺿﻊ – ا ﺰﻣﻦ ( أ‪ ،‬ﻣﻴﻞ ا ﻤﺎس‬ ‫ﻨﺤ ) اﻹزاﺣﺔ – ا ﺰﻣﻦ ( ‪.‬‬

‫داﻳﻦ = ﺟﻢ ‪ .‬ﺳﻢ ‪ /‬ث‪٢‬‬

‫ﻠﺤﻮﻇﺔ ﻫﺎﻣﺔ ‪:‬‬ ‫ا‬

‫· وﺣﺪات ﻗﻴﺎس ا ﻓﻊ )د( ‪ :‬د = ﻕ × ﻥ = ﻙ ) ﻉ ‪ – /‬ﻉ (‬ ‫) ﻣﻊ ﺮا ة اﻻ ﺎﻫﺎت (‬

‫‪،‬‬

‫ﻛﺠﻢ ‪ .‬ﻣ ‪ /‬ث = ﻧﻴﻮﺗﻦ ‪ .‬ث‬

‫· وﺣﺪات ﻗﻴﺎس ا ﺸﻐﻞ )ﺷﺶ( ‪:‬‬ ‫ﺷﺶ = ﻕ ﰒ ‪ ‬ف ﰒ‬

‫ﻧﻴﻮﺗﻦ ‪ .‬ﻣ = ﺟﻮل ‪ ،‬داﻳﻦ ‪ .‬ﺳﻢ = إرج‬ ‫) ا ﻮل = ‪ ٧ ١٠‬إرج (‬ ‫· وﺣﺪات اﻟﻘﺪرة ‪:‬‬

‫ﻻﺣﻆ أﻧﻪ إذا ن ﻣﺘﺠﻪ ا‬

‫ﺷﺶ‬ ‫ﻥ‬

‫· ﻼﺣﻈﺎت ﻫﺎﻣﺔ ‪:‬‬ ‫)‪ (١‬ﻋﻨﺪ أﻗ‬

‫ﻋﺔ )‬

‫ﻋﺔ ﻣﻨﺘﻈﻤﺔ ( ‪ :‬ﻧﻀﻊ ﺝ = ﺻﻔﺮ‬

‫)‪ (٣‬ﻋﻨﺪ ﻋﻮدة ا ﺴﻢ ﻘﻄﺔ ﺑﺪاﻳﺔ ﺣﺮ ﺘﻪ ‪ :‬ﻧﻀﻊ ف = ﺻﻔﺮ‬

‫ث ﻛﺠﻢ ‪ .‬ﻣ ‪ /‬ث = ‪ ٩٨‬ﻧﻴﻮﺗﻦ ‪ .‬ﻡ ‪ /‬ث = ‪ ٩٨‬ﺟﻮل ‪ /‬ث‬

‫)‪ (٤‬ﻣﻌﻴﺎر اﻹزاﺣﺔ ﲪﺲ ا ﺴﺎﻓﺔ ا ﻴﺔ ‪.‬‬

‫= ‪ ٧ ١٠ × ٩٨‬إرج ‪ /‬ث‬

‫· ﻧﻮع ا ﺮ ﺔ ) ﻣ ﺴﺎرﻋﺔ – ﺗﻘﺼ ﺔ ( ‪:‬‬

‫ﺏ~ ا ﻮﺣﺪات اﻟﻌﻤﻠﻴﺔ ‪:‬‬

‫ا ﺮ ﺔ ﻣ ﺴﺎرﻋﺔ ‪ :‬إذا ن ﻉ × ﺝ < ‪ ) ٠‬ﻤﺎ ﻧﻔﺲ اﻻ ﺎه (‬

‫ا ﺼﺎن = ‪ ٧٥‬ث ﻛﺠﻢ ‪ .‬ﻡ ‪/‬ث = ‪ ٩٨ × ٧٥‬ﻧﻴﻮﺗﻦ ‪ .‬ﻡ ‪ /‬ث‬

‫ا ﺮ ﺔ ﺗﻘﺼ ﺔ ‪ :‬إذا ن ﻉ × ﺝ > ‪ ) ٠‬ﻣﺘﻀﺎدﻳﻦ‬

‫= ‪ ٩٨ × ٧٥‬ﺟﻮل ‪ /‬ث‬

‫اﻻ ﺎه (‬

‫‪ ‬‬

‫ﺝ~ ا ﻮﺣﺪات ا ﻜﻬﺮ ﻴﺔ ‪:‬‬

‫‪Ù‬ﻉ‬ ‫· إذا ﻧﺖ ‪ :‬ﺝ =‬ ‫‪°Ù‬‬

‫ا ﻮات = ﺟﻮل ‪ /‬ث ‪ ،‬ﻛﻴﻠﻮ وات = ‪ ١٠٠٠‬وات = ‪ ١٠ ١٠‬إرج ‪ /‬ث‬

‫ﻧﻔﺲ وﺣﺪات ا ﺸﻐﻞ‬

‫ﺑﻌﺪ ‪ :‬ﻧﻀﻊ ﻉ = ﺻﻔﺮ‬

‫)‪ (٢‬ﻋﻨﺪ أﻗ‬

‫ﺍ~ ا ﻮﺣﺪات ا ﺜﺎﻗﻠﻴﺔ ‪:‬‬

‫ﺫ‬

‫ﻋﺔ داﻟﺔ‬

‫ا ﻮﺿﻊ ﻉ = د ) ‪ ( O‬ﻓﺈن‬

‫ﺝ = ﻉ ‪ = ¬Ù .‬ﻉ ‪ ) ¬Ù .‬ﺣﻴﺚ ﻉ = د )ف( (‬ ‫‪[Ù‬‬ ‫‪OÙ‬‬

‫اﻟﻘﺪرة = ﻕ × ﻉ = ‪> = >Ù‬‬ ‫‪Ù‬ﻥ‬ ‫ﻥ‬

‫· وﺣﺪات ﻃﺎﻗﺔ ا ﺮ ﺔ ‪ :‬ط = ‪ 1‬ﻙ ﻉ‬

‫اﻹزاﺣــﺔ ا ﻬﺎﺋﻴــﺔ‬ ‫ﻋﺔ ا ﺘﻮﺳﻄﺔ =‬ ‫ا ـــﺰﻣﻦ ا ـــ‬

‫· ﻣﺘﺠﻪ اﻟﻌﺠﻠﺔ ) ﺝ ﰒ ( ‪:‬‬ ‫ً‬ ‫‪Ù‬ﻉ‬ ‫(‬ ‫ﺟ ﺎ ‪ :‬ﻫﻮ ﻣﻌﺪل ﺗﻐ ﻣﺘﺠﻪ ا ﻋﺔ ﺑﺎﻟ ﺴﺒﺔ ﻠﺰﻣﻦ )‬ ‫‪°Ù‬‬ ‫ً‬ ‫ﺑﻴﺎﻧﻴﺎ ‪ :‬ﻫﻮ ﻣﻴﻞ ا ﻤﺎس ﻨﺤ ) ا ﻋﺔ – ا ﺰﻣﻦ ( ‪.‬‬

‫‪ ،‬ﺷﺶ = ﻕ × ف ﺟﺘﺎ ﻩ‬

‫‪ ‬ﺷﺶ‬ ‫‪‬ﻥ‬

‫ا ﺴــــﺎﻓﺔ ا ﻴــــﺔ‬ ‫ﻋﺔ ا ﺘﻮﺳﻄﺔ =‬ ‫ا ـــﺰﻣﻦ ا ـــ‬

‫‪ ،‬ﻣﺘﺠﻪ ا‬

‫ﺟﻢ ‪ .‬ﺳﻢ ‪ /‬ث = داﻳﻦ ‪ .‬ث‬

‫‪ ،‬ث ﻛﺠﻢ ‪ .‬ﻣ = ‪ ٩٨‬ﻧﻴﻮﺗﻦ ‪ .‬ﻣ = ‪ ٩٨‬ﺟﻮل‬

‫‪°Ù‬‬

‫ﻉ‬

‫ﺇ ﺝ‪‬ﻥ=‪‬ﻉ‬ ‫ﻥ‬

‫ﻥ‬

‫ﺉ ‪ þ‬ﻉ = ‪ þ‬ﺝ‪‬ﻥ ﺇ ﻉ –ﻉ‪ þ =٠‬ﺝ‪‬ﻥ‬ ‫‪0‬‬ ‫‪0‬‬ ‫ﻉ‪0‬‬

‫‪٢‬‬

‫= ا ﺴﺎﺣﺔ ا ﺤﺼﻮرة ﺑ‬

‫ﻣﻨﺤ ) اﻟﻌﺠﻠﺔ – ا ﺰﻣﻦ ( وا ﺤﻮر ﺳﺲ‬

‫· إذا ﻧﺖ ‪ :‬ﻉ = ‪ OÙ‬ﺇ‬

‫· وﺣﺪات ﻃﺎﻗﺔ ا ﻮﺿﻊ ‪ :‬ض = ك ‪ ‬ل‬

‫ﻥ‬

‫‪°Ù‬‬

‫ﺇ ف = ‪ þ‬ﻉ ‪ ‬ﻥ‬

‫ﻧﻔﺲ وﺣﺪات ا ﺸﻐﻞ‬

‫‪0‬‬

‫‪١‬‬

‫ﻥ‬

‫‪O‬‬

‫‪ þ‬ﺱ = ‪ þ‬ﻉ ‪ ‬ﻥ‬

‫‪0O‬‬

‫‪0‬‬


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