A pressure-pump has a horizontal tube of cross-sectional area 10 cm 2 for the outflow of water at a speed of 20 m / s. The force exerted on the vertical wall just in front of the tube which stops water horizontally flowing out of the tube, is: [given: density of water =1000 kg / m 3 ]

Question

A pressure-pump has a horizontal tube of cross-sectional area 10 cm 2 for the outflow of water at a speed of 20 m / s. The force exerted on the vertical wall just in front of the tube which stops water horizontally flowing out of the tube, is: [given: density of water =1000 kg / m 3 ] (A) 300 N (B) 500 N (C) 250 N (D) 400 N

Tardigrade Admin · Accepted Answer

F =ρ a v2=103 × 10 × 10-4 × 20 × 20 F =400

$300 N$

$500 N$

$250 N$

$400 N$

$F = ρ a v^{2} = 1 0^{3} \times 10 \times 1 0^{- 4} \times 20 \times 20$
$F = 400$

Q. A pressure-pump has a horizontal tube of cross-sectional area 10cm2 for the outflow of water at a speed of 20m/s. The force exerted on the vertical wall just in front of the tube which stops water horizontally flowing out of the tube, is: [given : density of water =1000kg/m3 ]

300N

500N

250N

400N

F=ρav2=103×10×10−4×20×20 F=400

$300 N$

$500 N$

$250 N$

$400 N$

$F = ρ a v^{2} = 1 0^{3} \times 10 \times 1 0^{- 4} \times 20 \times 20$
$F = 400$