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 - :
|
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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):
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:
= 4,84 ;
j = 0,735 .
, , ,
= 4,84 , w = 3,14 -1, j = 0,735 .
2
151. = 60 , l1 =1,2 , 1=2-1, . , l2 =0,6 . 2 ? , ? .
152. D = 75 = 40 F = 1 . e t = 10 , r 12 . .
153. D = 60 , = 2 . J , , , t = 3 w = 9 /.
154. 1 = 50 m 2 = 60 D =4 . J , e = 1,5 /2. .
155. , , j= At + Bt3, = 2 /, = 0,2 /3. , t = 2 , J =0,048 × 2
156. V = 8 /. , , , , s = 18 .
157. , , n = 12c-l, Dt = 8 . D = 30 . = 6 .
158. , = 0,4 , , 1 = 0,3 2 = 0,7 . 1 2 .
159. . , . , - . f , = 5,6 /2. , , .
160. , , 1 = 0,2 2 = 0,3 . , , m = 0,4 , = 2 /2? .
161. = 5 . l 1 = 70 . 1 = 1-1. , , l2 = 20 ? () J = 2,5 ×2.
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162. . w1= 4 /. w2 , , ? J =5 ×2. l =1,8 , m==6 . , .
163. D = 3 m1=180 . w1 , m2 = 70 V=1,8 / ?
164. , , . . j , , , ( ) ? m1 = 280 , m2 = 80 .
165. , w1=25 /. . w2 , a=90? J 2,5 ×2, J0 = 0,5 ×2.
166. l =1,0 , . =7 , . , a=60. V=360 /.
167. , n1=8 --1, m1=70 . , 2=10 -1. 2 . .
168. D=0,8 m1=6 m2=60 . w , m=0,5 ? r=0,4 . V=5 /.
169. m1=150 , , n=8 --1. 2= 70 . w , ? , , .
170. l =1,0 M1=0,7 , . , 2/3 l, m = 5 , . a=60. .
171. l =30 : , . , . L . .
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172. , =A1 sinw t y=A2 cosw t, A1=8 , 2=4 , w =2 -1. . .
173. , x=Asinwt, A=5 , w =2c-1. , =0,1 , F=5 . t.
174. n R=20 , .
175. R =40 , .
176. , Dr = 18 Vmax=16 /.
177. , x0 = 4 , V0=10 /. j0 , =2 .
178. : 1=1 sinw1t x2 =A2sinw2(t+t), 1 = 2 = 3, w1 = w2 = pc-1, t=0,5 . j0 . . t=0.
179. M=200 , k= 500 /. m=10 , V=300 /, . , T .
180. m=60 T=2 . x0=4,0 E=0,02 . .
181. u = /3, . ?
182. = 3 . , a .
183. b ( ) = 3 ?
184. - = 1,53 . .
185. u = 0,8 ( ). -, .
186. = 469 /*. , ?
187. , = 1,53 , m0?
188. b ( ) , ?
189. p1 = . ( ), == 2 .
190. , . , , = 2 .
3