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Question
Physics
A suction pump at ground level can draw water from a well whose depth of water level is
Q. A suction pump at ground level can draw water from a well whose depth of water level is
1573
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CMC Medical
CMC Medical 2007
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A
more than 40 feet
B
less than 35 feet
C
about 50.8 feet
D
none of the above
Solution:
The water can be drawn from a well whose depth is equal to height of water column (= 76 cm of mercury column).
∴
h
=
h
ρ
/
ρ
1
=
1
76
×
13.6
=
1033.6
c
m
=
2.54
×
12
1033.6
f
t
=
33.91
f
t
Thus, depth of water level is less than 35 feet.