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:




:

































 

 

 

 


1

1

1.

1. (), .

2. () . , , .

3. , åFx = 0; åFy = 0. , , , .

4. .

1

, 9, F = 6 , F1 = 2 . , . .

7

 

1. . , . AD, F F1. , , .

2. , ( ), R RC. , ( ). , ; , . 10.

 

8

3. .

4.

;

;

;

, R R AC.

R = 5,86 R AC = - 4,34 .

, , .

: R = 5,86 , R AC = - 4,34 .

2

2.

1. () () .

2. .

3. .

, :

) å F = 0; ) å F = 0; ) å = 0;

å F = 0 å = 0; å = 0;

å = 0; å = 0; å = 0.

4. . , ( , ).

5. ( , ).

 

2

, , q = 2 / 9. P = 2 ; = 1,5 . .

1. , .

2. ( 11).

9

3.

å F = R q - = 0;

R = q + ;

R = 2 + 2 = 5 ;

å = - R+ q + P = 0;

R = q + P ;

R = 2 + 2 = 5,25 ×.

R = 0, .

4. .

å = - - MR + = 0: - - 5,25 + = 0

5. å = 0 , , .

: R = 5 , R = 5,25 ×.

 

3



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