Answer to Question #147861 in Mechanical Engineering for Janet

Question #147861
A water jet with a diameter of 70 mm is deflected by 60⁰ at the velocity of 36 m/s
at the beginning of the blade as shown in figure below. Calculate the magnitude
of the force generated by water on the blade when the velocity of water jet
leaving the blade is 30 m/s due to friction.
1
Expert's answer
2020-12-07T03:48:12-0500

According to the momentum equation


"F_x=v_1(-\\rho v_1A_1)+v_2\\cos60\u00b0(\\rho v_2A_2)="


"=36\\cdot (-1000\\cdot36\\cdot3.14\\cdot0.07^2)+30\\cdot\\cos60\u00b0\\cdot(1000\\cdot30\\cdot3.14\\cdot0.07^2)="


"=-13017(N)"


"F_y=-v_2\\sin60\u00b0(\\rho v_2A_2)=-30\\cdot\\sin60\u00b0(1000\\cdot30\\cdot3.14\\cdot0.07^2)=-11992(N)"


"F=\\sqrt{F_x^2+F_y^2}=\\sqrt{13017^2+11992^2}=17699(N)"





Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS