2. The drag force (F) on a boat is influenced by the water velocity (V), water viscosity (µ), water density (p), and the width of the boat (w). What would be a suitable set of pi terms for exploring this relationship?
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- 2. The details of showing that the corresponding dimensionless drag force (Ca) per unit length on the cylinder can be written as Ca = f(Re) Show the explanationPlease helpFollow the statement and the figure below to solve the question. Then determine the force necessary to drag a 1 m square plate, thick 3 mm, positioned at equal distance from the two plates, at a constant speed of 0.15 m/s.
- Choose the correct answer What is the principal cause of action of buoyant force on a body submerged partially or fully in fluid? a-Development of force due to dynamic action b-Displacement of fluid due to submerged body c-None of the mentioned d-Internal shear forces mitigating external forces e-Other:i need the answer quicklypleaase show complete solution and include free body diagram
- c) The drag force FD on a cylinder of diameter d and length l is to be studied. What functional form relates the dimensionless variables if a fluid with velocity V flows normal to the cylinder?A thin rod having a mass of 4 kg is balanced vertically as shown in (Figure 1). Take L = 0.55 m. Figure F h L 1 of 1 > Determine the height h at which it can be struck with a horizontal force F and not slip on the floor. This requires that the frictional force at A be essentially zero. Express your answer to three significant figures and include the appropriate units. h= μA Value Units ?A wooden buoy (sg=0.64) is 500 mm. by 50 mm. by 3 m long is made to float in oil surface. How 0.05 m 0.45 m many N of steel (sg=7.85) should be attached to the bottom to make the buoy float with exactly 450 mm exposed above the oil surface? (Hint: You will get the Volume of steel first then use it to solve for the Weight of steel in Newtons) 2.55 m BFcod BF Wteet steel - W S00
- Course: CIVIL ENGINEERING Subject: FLUID MECHANICSFluid mechanics, I need solutions in 15 minutes please. MCQ/A block of steel (s.g. = 7.85) will "float" at a mercury - water interface as shown in the figure. What is the height that submerged in the mercury (b)? Assume that the dimensions of the base of the block are X and L. A-269.247 mm B-139.251 mm C-237.008 mm D-297.826 mm E-208.140 mm F-164.025 mm G- 114.018 mm H-192.048 mm I-251.178 mm J- 324.085 mm1. Water is moving through a pipe, and the laminar-flow velocity profile at some section along this pipe is [D² V = =42²-2²] 4μ where V is the velocity at any position y, ß is a constant, μ is the viscosity of water, D is the pipe diameter, and y is the radial distance from the pipe centerline. What is the shear stress in the fluid at the wall of the pipe? (Just use symbols). If the given profile persists a distance L along the pipe, what is the force on the wall due to the moving water and what is its direction? Hint: The force on the wall is equal in magnitude but in the opposite direction of that in the fluid.