... C<=++++11ms1111amFTFNP3b-b<H9`fH`J3b-H`Qr2JC*H`J 42 J4VH`WH9`f4VH`WJVWCZ=++++ 22 ms 222 2amFTFNP3b-b<fHZ`JZZ3b-QZr2ZJi*HZ`J 42 ZJ 4ZfZ4ZJZZI#?>JZJafJfZJfaJZJH9`f4VH`WJVWf4JVWfNVW*VWÃm00t 2 )30sin30(cosTT ... giicf09,A8)6_H6JMH6*F8*0*49X!?i*iZ< 4-. (**Z i,$iZUF>R9$2Rm9ãããMiZO,$iU,PJFHZJHZJH6M.k<:0kc)6_8 4-] < 4-. (.(bR.)6_8< 4-. (:@+8 4 -2 .M)6_? 4-] * 4-. (ZP9* 4-] O_<6@H6Jã+0*49X!N+ 4-] 3ZIãIc23<iMiZMM)6_69?d@!67iM.(b!$,=\&'()VD#WJrrFMM*!)6_69iZMiM!67ic-00.s<FJ!6745)7 4-. (*G)7 4-. (f0!i*49X!N+f0!3$0CD#5<).#BAM.Fb-V.F+f0!W 2. ... 4ZfZ4ZJZZI#?>JZJafJfZJfaJZJH9`f4VH`WJVWf4JVWfNVW*VWÃm00t 2 )30sin30(cosTT à+= 20 2 1 26 8,0 2 3 10 .2 30sin30cosT2F00Ãm=+=à+CHbJZ2Bi 3: Ba vật có cùng khối lượng m = 20 0g được nối với nhau bằng dây nối...