2.00.51.9153%\r3st22.00.53.81\r(1)1st4bcuv p0 1m\n^!\nx5s,¡st \nv3\r¢r£st¤¥\n¥g¦\r(2)}~3bc\ndefg¦\r(3)>?F§BCDE¨o©ªc3{stqbc \n01\n«¬80®bcdefg\rkl+o\r±²³(l)0.2m/s0.32W(2)53%(3)bc\n¶b3·\r±¸A³¹º»¼½yz0¾¿@AGÀ\r(1)v=s/t=1m/5s=0.2m/s\rP=Fv=I.6NX0.2m/s=0.32W\r(2)J!¥ÇJ!=GhlV&=Fs\rH=WÉ!/%Ê=Gh/F.s-=2NX0.5m/3.8NX1m=26.3%\r(3)o©ªc3{stqbc \n01\n«¬80®bcdefg\nkl+bc\n¶b3\rÌÍÎÏ}~\r17.(2020ÑÒST)]$^_0pÓÔÔÕÔÖ×c1.5m20-ØÙpt3mÚ\nÛÖ8ÜoÔÕ\rÝUÞßàW0394EvaluationWarning:ThedocumentwascreatedwithSpire.PDFfor.NET.\rÝUÞßàW0395\rÖ"0áâpãbc?n<=ãbc0!Q600N\n0ÙpãIsä/8åæp“å\nÔ"0èé\rsä1000N,¡¨\r(1)-Øæsä¤êÇ¥ë\r(2)ã=0bc\ndefg+êÇë(F§ìípî-y)\r±²³(l)1800J(2)83.3%\r±¸A³(l)%,C=Fs=600NX3m=1800J\r(2)W??=Gh=1000NX1.5m=1500J\rï=%J!X100%/%Ê=1500JX100%/1800J^83.3%\rÝUÞßàW0395