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Ͳ Dz Ͳ ˲ Բ , IJ : Ͳ ( ) , ...

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˲ Բ , IJ : Ͳ ( ) 8 12.03.2004 2004 Գ , // : ( )/ : . . , . . . : , 2004. 35 .

: . . , . , ., . . , . , ., Ͳ в IJ Ͳ

1. ԲͲ ί Ͳ ʳ ( ) x x f ( t ), f(t) .

x x vx.

t s v, t s , t. s 䒺 , s 0.

dx vx.

dt x v ax x.

t x vx ax.

dt ʳ f (t ), r R const.

   

1. г x A B t C t 2, = 2, =1/, = 0,5/3.

, vx ax t = 2.

   

3. m1 = 20 =2 .

³ m2 = 80 ( ) . u , = 30 .

   

4. M L.

m. s , ? .

. . ³ , . , , , .

   

5. m = 20 h = 5.

k , x =10 . .

. . , 㳿 . ³ E1 ( ) 㳿 E2 ( h), .

E1 E2, T1 1 T2 2. (1) T1, T2, 1 2 㳿 . 㳿 , (1) 1 2. (2)

, , , . 㳿 :

2 k x 2, 㳿 h,

   

(0,1) 6. m1, v1, m2. , , .  㳿 ?

. 㳿, ,

   

7. , m = 80 (.

4), , m1 = 100 m2 = 200. , , . .

   

z.

³ , T1 = T1; T2 = T2. , (3)

T1 T2 T1 T2, (1) (2):

   

8. R = 0,2 m = 50 N1 = 4801 .

ϳ 䳺 t = 50. M .

   

, .

9. R = 1,5 m1 = 180 n=101.

m2 = 60. v , ?

   

J1 J2 ; J1 J2 .

z

   

10. . v1, , , (R = 6,37106)? , 䳿 , .

. 䳺 , . 䳺 . , T1 1 T2 2. (1) T1, 1 T2, 2 㳿 ( ) ( , ) .

³ 㳿,

   

11. = 10.

, , : xmax = 1. .

   

12. m = 0,01 T = 2. = 0,1. Fmax, 䳺 .

<

   

. - . t = 0. x Acos( t ),

   

A1 A2. A1 = 3 A2 = 2 1 = 30 2 = 60 X. , A1 A2 : A A1 A2. ³ , A A12 A2 2 A1 A2 cos(2 1 );




140 .


   

14. v = 20/. , x1 = 12 x2 = 15 , = 0,75. , t = 1,2, A = 0,1.

   

101. ҳ v0 = 4/.

, v0 . h ? .

102. a = 2 5/. , , n- , , . v0 = 0.

103. , = 60.

v1 = 54/ v2 = 72/. v ?

104. v0 = 10/ a = 5/2. , s, , r t = 4 .

105. . v1 = 18/. , , v2 = 22/, v3 = 5/. v .

106. ҳ = 30 v0 = 30/.

an a, t = 1 ?

107. = /6/. s, t = 4, , r? , - r, , 0 = /3.

108. x A1 B1 t C1 t 2 y A2 B2 t C2 t 2, B1 = 7/, 1= 2/2, 2 = 1/, 2 = 0,2 /2. t = 5.

109. , = 1/ t = 9,9. ? R = 2.

110. R = 30 . a , , t = 4 an = 2,7/2.

111. v = 250/ m = 8 . m1 = 6 u1 = 400/ . u2 .

112. , v1 = 3/, , , , u1 = 4/. u2x . m1 = 210, m2 = 70.

113. , , = 30 . u2 , u1 = 480/. m2 = 18, m1 = 60.

114. m1 = 70, v1 = 9/, 2 = 190, v2 = 3,6/, . ? , ?

115. , , m1=2,5 = 30 v = 10/. v0 , m2 = 60? .

116. , .

. m1 = 60, 2 = 20. ( ) , ( ) v = 1/? .

117. , v = 400/, . , 40% , u1 = 150/. u2 .

118. = 200 ( , ) v = 1/. , m1 = 20. u1 u2 .

119. = 3,5 m1 = 200, m2 = 80, , ? .

120. = 3 = 120 .

m1 = 60 2 = 90. , ?



Pages:   || 2 | 3 |
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