Natural Science
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求解🙏
The two masses shown in Figure
are connected by three massless
and frictionless pulleys. What is the
magnitude of ai / a2 ?
a 411
2
a2
As shown in Fig. , block A and B are
connected to the strings of the
pulley system, let a A and ab be the
acceleration of block A and B,
respectively, and x = axlab,
which of the following is correct?
-
B
單選:
O A. 0 < x < 1
O B. 1<x<3
O C. -1 < x 30
O D. x < -3
O E. 3 < x
OF. -3 < x < -1
>
As shown in Fig. , block A, B, and C
are connected with a thin rope and
pulleys. The mass of block A, B, and
C, are m, 3m, 5m, respectively. If
there is no friction between all
contacting surfaces, and the rope
and the pulleys are massless, which
of the following statement is
correct regarding the aq the
acceleration of block A, and as the
acceleration of block B?
A
B
單選:
O A. 2 < ſaglabl < 4
<
O B. 0 < ſaglabl < 1/8
O C. 4 < |aglab. 58
O D. 1/4 < laglabl < 1/2
O E. 1< ſaglab) 2
O F. 8< |aglabl
O G. 1/2 < |aglab] < 1
X
<
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