Momentum and CollisionHard
Question
One end of a horizontal pipe is closed with the help of a valve and the reading of a barometer attached to the pipe is 3 × 105 pascal. When the value in the pipe is opened then the reading of barometer falls to 105 pascal. The velocity of water flowing through the pipe will be in m/s : -
Options
A.0.2
B.2
C.20
D.200
Solution
Fro horizontal motion
P1 +
ρV12 = P2 + ρV22
⇒ 3 × 105 = 105 + ×103V22
⇒ V22 = 4 × 102 ⇒ V2 = 20m/s
P1 +
ρV12 = P2 + ρV22⇒ 3 × 105 = 105 +
×103V22⇒ V22 = 4 × 102 ⇒ V2 = 20m/s
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