5 0 : m=100kg h=10m . 4m : 1 . . 2 . . 3 . . 6 0 : (S) m=400g ABCD AB AB=3m CB R=50cm CD CD=2m . (S) A ( ABC . ) Epp=0 C.1 . (S) A . 2 . (S) B .3 . (S) C .4 . (S) D , C D CD . 7 0 : (S) m=200g ABCD AB AB=2m CB r=3m CD . (S) A vA=3m.s-1 B vB=2m.s-1 . O Epp.1 . (S) AB.2 . f AB . 3 . BC CD .a . C v (S) C , . b . (S) B . ,c . D v (S) D. : 01 :I . g =10N/ kg . : (P) r =5cm () ) ( : J . (S) m=500g =30 . (f) . (S) A . AB=50cm 1-=2m.s B v .1 . (S) A B .2 . ... (S) , T (S) . ,3 . ... (P) , J .II . (S) B , (S) BC 1-=0,6m.s C v .1 . (S) BC . 2 . BC=40cm . 02 : (S) m=50g A AMB R =2m .1 . (S) A M R m g .2 . M v (S) M .3 . B v (S) B . 03 : AB l = 40cm m=600g () . 21J = ml3.1 . . 2 . B . 04 : (S) m=50g A () D . 1 . (S) M B . AB .2 . (S) BC . BC (S) t = 20s .3 . CD f = 0, 2N . CD . : r = IB= IM= 2m = 30 8 0 : kg M 30 , m h 3 . kg m 5 cm r 20 2 3. 10 . 5 m kg J 1 . 0t F kg m 20 .1t s m v / 21 . 1 - . 2 - w 1t . 3 - 3 . 4 - 0t 1t F. 5 - 1t . 6 - 0t 1t .7 - P( 2 ) s t 4 .8 - , . 1 . m g z .2 . , .3 . . 9 - , . 1 . . 1 . . 2 . . . 10 - , .. : g=10N/Kg . 9 0 : 0 t m=100kg h=1km . 1 t =700m 1 h , 2F=KV K=20kg/m V 1 t 2 t .1 ) , 0 t 1 t .2 ) 0 t . . (3 0 t 1 t . (4 . 1 V . (5 1 t 2 t . . (6 1 t .(7 1 t 2 t . (8 1 t 2 t . : 10 : m=80kg ABECD ,A h=200m B /h =20km B V . CD . AB=25cm =30 EC=4m. BE . CD r=2m . BE CD . 1 ) AB .2 ) AB . k=0.05 . 3 ) B .4 ) EC f=10N . C V C .5 ) CD M . W(P) = mgr(1- sin) C M . M .6 ) CD 5.048km/h min CD . 11 : = 30 (, S ) m=400g ,, (P) () . 1 . O , =40ms . : a ) 2 M 4 M .b ) . 2 M 4 M . :2 24 22 4V - VT = m(gsin- )2M M. T .c ) J , R=20cm .2 . A =1m/sA V , , , B =1.5m/s B V .a . . b . AB=40cm .g=10N/Kg. 12 : m=70kg A , F= 250N . AB=200m 72km/h B .1 . A B .2 . f. A B f .3 . BC=10m HC=5m . =500N 1 f .a ) BC . b ) C .4 . C . D =9m/s D V . , . a ) . . b ) D .c ) . : g = 10N/Kg 13 : m = 40g , l=80cm . = 30 B .1 . .2 . . C PP E .3 . . 4 . B C.) (5 . B C C V C . C V .. : g = 10N/Kg .. . 14 : A .1 2h=h +h 31m . m=5kg 20L r =20cm .0t F=250N .1t 1h 1V =1m/ s 4 .2t 2V =2m/ s 46 . 1 . . 2 . w 1t 2t

3 . 0t 1t 1t 2t4 . . B . . 1 . . 2 . , t =1min 1t =5s (af =0,75P af P .) C . , . 1 . , C .2 . 1 h . 1 1 h 2 1 2h=h +h . .

15 : (S) m=0.4kg .ABC AB=2m BC r=1m . A . =60 g=10N/Kg . A B . 1 . ( (S B (B) C E , m g AB (. (B C E .2 . B V (S) B .3 . A (A) P E ( (S m g AB r . (A) P E . O .4 . B C , C V (S) C .5 . (S) C =6.2m/s C V . R BC (S) . : 4