In the figure, two long barges are moving in the same direction in still water, one with a speed of 11 km/h and the other with a speed 21 km/h. While they are passing each other, coal is shoveled from the slower to the faster one at a rate of 780 kg/min. How much additional force must be provided by the driving engines of (a) the faster barge and (b) the slower barge if neither is to change speed Assume that the shoveling is always perfectly sideways and that the frictional forces between the barges and the water do not depen on the mass of the barges.

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In the figure, two long barges are moving in the same direction in still water, one with a speed of 11 km/h and the other with a speed
21 km/h. While they are passing each other, coal is shoveled from the slower to the faster one at a rate of 780 kg/min. How much
additional force must be provided by the driving engines of (a) the faster barge and (b) the slower barge if neither is to change speed?
Assume that the shoveling is always perfectly sideways and that the frictional forces between the barges and the water do not depen
on the mass of the barges.
(a) Number
i
Units
N.
(b) Number
Units
étv J
Aa
MacBook Pro
esc
@
#3
$
&
1
2
4
7
8.
Q
W
E
Y
ab
S
D
F
G
lock
C
V
N
B
Transcribed Image Text:In the figure, two long barges are moving in the same direction in still water, one with a speed of 11 km/h and the other with a speed 21 km/h. While they are passing each other, coal is shoveled from the slower to the faster one at a rate of 780 kg/min. How much additional force must be provided by the driving engines of (a) the faster barge and (b) the slower barge if neither is to change speed? Assume that the shoveling is always perfectly sideways and that the frictional forces between the barges and the water do not depen on the mass of the barges. (a) Number i Units N. (b) Number Units étv J Aa MacBook Pro esc @ #3 $ & 1 2 4 7 8. Q W E Y ab S D F G lock C V N B
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