.
x = A cos(wt+j),
- ; - ; w - ; j - .
, :
u = -Aw sin (wt+j); a = - Aw2 cos (wt+j).
:
)
)
, ,
x = A1 cos wt; y = A2 cos (wt+j);
) j=0;
) j=p;
) j=p/2.
y - x t;
u - .
Dj Dx , ;
l - .
z
z - z, ; e - ; Jz - .
m z, :
) l , ,
) ( ) , ( ),
R - ();
) R , ,
z , z,
w - .
, z,
= const,
Jz - z; w - z.
, z,
mo - ; u - ; - ; b - ,
(b = u/).
=m2 - .
= + ,
- .
1. R=1,5 m1=180 n=10 -1. m2=60 . u , ?
. , z, , . Lz - :
|
|
const, (1)
Jz - z;
w - .
, , .
(1)
(2)
J1 J2 ; - .
z : . . , J2 ( ) . ( )
(2) , (w = 2pn) (w' = u/R, u - ):
R2
:
/.
2. m = 0,01 = 2. = 0,1 . Fmax, .
. :
w = 2p/.
(1)
, , , , , F = -kx, k - ; - . xmax, :
Fmax = kA. (2)
k :
k = mw2 = m×4p2/T2. (3)
(1) (3) (2) ,
:
0,045 = 45 ;
3. ,
1 = 3 , 2 = 2 , t 1 = 1/6 , t 2 = 1/3 , = 2 . .
. - . t = 0.
= A cos (wt+j),
,
.
:
-1;
1 2. 1 = 3 2 = 2 j1 = 30 j2 = 60 0. w , 1 2: = 1 + 2. :
(. 3):
|
|
:
= 4,84 ;
j = 0,735 .
, , ,
= 4,84 , w = 3,14 -1, j = 0,735 .