There is a 90° bend in a pipe line in which water is flowing at speed v . The cross sectional area of pipe is A . The force exerted by pipe walls on water at bend is

Question

There is a 90° bend in a pipe line in which water is flowing at speed v . The cross sectional area of pipe is A . The force exerted by pipe walls on water at bend is (A) √3Av2ρ  (B) √2Av2ρ  (C) Av2ρ  (D) √5Avρ

Tardigrade Admin · Accepted Answer

F=(d p/d t)=(√2 V)(d m/d t)=(√2 V ρ )(d ( textvolume)/d t)=(√2 V ρ )(A V)

Q. There is a $9 0^{\circ}$ bend in a pipe line in which water is flowing at speed $v$ . The cross sectional area of pipe is $A$ . The force exerted by pipe walls on water at bend is

$3 A v^{2} ρ$

$2 A v^{2} ρ$

$A v^{2} ρ$

$5 A v ρ$

$F = \frac{d p}{d t} = (2 V) \frac{d m}{d t} = (2 V ρ) \frac{d ( volume )}{d t} = (2 V ρ) (A V)$

Q. There is a 90∘ bend in a pipe line in which water is flowing at speed v . The cross sectional area of pipe is A . The force exerted by pipe walls on water at bend is

3​Av2ρ

2​Av2ρ

Av2ρ

5​Avρ