Problem 4A smooth sphere of concrete with a diameter of 3 m is rolling in a slope at 9% (Ay/Ax) under the PacificOcean, at a constant terminal velocity. The rolling friction is calculated to be 2% of its weightunderwater. Determine the velocity of the sphere.Make sure to clearly explain how do you calculate the Cd of the sphere.Density of concrete: 2400 kg/m³Density of seawater: 1030 kg/m³Seawater

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Answered: Problem 4 A smooth sphere of concrete…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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9. The thin ( 3 mm ) thick plastic panel shown in the figure is lowered from a ship to a the Поог. The construction site on осean plastic panel weighs ( 200 N) in air and is ship Cble lowered at a rate of ( 2 m/s ). Assuming the panel remains vertically oriented, calculate ing the tension force in the cable. Take ( p = 1000 10 m/s ),e and use; water Plustic Punel kg/m', v 1.31 1/5 CDlam= 1.328 / Re. CDturb = 0.072 / Re
PROBIEM 1 AssoHE A BONDARY LAYER FOR A Fluid OVER A F|AT PIATE CAN BE APPROKIMATED BY WHERE U= CONSTANT is THE FREE STREAM VelociTy AND S. S(x) is THE THICKNESS Of THE BON DARY LAYER. ) WHICH BOUNDARY CONDITIONS ARE SATISFIED AND WHICH ONES ARE NOT ? 2) calculATE S* AND g* 3) WRITE AN EXPRESSION FOR THEe wall STRESS, AS A PUNCTION OF U, S AND . WHERE Y is THE Visaosire OF THe Fluid. INDICATE THE DIRECTION OF THE STRESS. 4) OBTAIN AN EQJATION FOR S«) FROM THE MOMENTUM INTEGRAI EQUATION 5) OBTAIN S«)
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A tall cylindrical container, 14 in in diameter, is used tomake a mold for forming 14-in salad bowls. The bowls areto be 8 in deep. The cylinder is half-fi lled with molten plastic,μ = 1.6 kg/(m-s), rotated steadily about the centralaxis, then cooled while rotating. What is the appropriaterotation rate, in r/min?
EX in Asteel of speçific weight cy lin der (1"diametar andiz" Long) (8) =490 1b fI Ft3 fall be Cause of its own weight, at q uniform slig htly 9. rate of on5 HIs in side a tube of larger diameter.A Castor- oil film M = 6x lo -3 16 between t-s Constant thihness and the tube between of %3D is the cylinder Determine the cleamanCe (y) in ft the Cylinder and the tube-
A hydraulic lift of the type commonly used for greasing automobile consists of a 280.18-mm- diameter cylinder, the annular space being filled with oil having a kinematic viscosity of 0.00042 m'/s and specific gravity of 0.86. If the rate of travel of the ram is 0.22 m/s, find the frictional resistance when 2 m of the ram is engaged in the cylinder. -Ram, 10.000 in dia - Oif film, 0.003 in thick - Fixed cylinder
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A TRUCK is SHoleliNG LiquiD slusH (8 = 20 kg/m²) THE SUSH is THROWN FORWARD AT 0= 60° As SHOWN , THE BADE is 3m wiDE. I h= 0.5m a) calalatE THE HasS Fow RATE OF slusH REMOVED FROM THE ROAD b) MAKE A SCHEMATIC OF A CONTRd voluMe AROUND THE BlADE INDICATE FORCES AND MASS FOw RATES IN 2 QUT OF THE CV. c calculATE THE VERTICA FORCE THAT THE slusH EXERTS ON THE elADE (NEGATIVE OP (MAGNITUDE 8 DIRECTiON) THE REACTION FORCE d) dalolATE THE HORIZONTA) FOROE AT THE shSH ERERTS ON THE BLADE (HAGN ITUDE E DIRECTnioN) berRA "e) How is THE TRUCK ABle To PROJIDE SUCH HORizoNTAl FORCE ? *F) waulo A LARGER O (Sax e=90°) RESUT iN A LARGER OR SMAller HorizONnA) FORCE
9. The thin ( 3 mm ) thick plastic panel shown in the figure is lowered from a ship to a site the floor. The construction on осean plastic panel weighs ( 200 N ) in air and is Cable lowered at a rate of ( 2 m/s ). Assuming the diys panel remains vertically oriented, calculate = 1000 ing the tension force in the cable. Take ( p = 1 10 m/s ), and water Plastic kg/m', v 1.31 use; %3D Punel 上. -3m. 1/2 1/5 Cplam = 1.328 / Re Cpturb = 0.072 / Rej.
9. The thin ( 3 mm ) thick plastic panel shown in the figure is lowered from a ship to a construction site on the ocean floor. The plastic panel weighs ( 200 N) in air and is lowered at a rate of ( 2 m/s ). Assuming the ship Cble panel remains vertically oriented, calculate ing the tension force in the cable. Take ( p = 1000 * 10* m²/s ), and use; water Plastic funel kg/m', v = 1.31 m Colam = 1.328 / Re Cpturb = 0.072 / Re
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Does force of friction depends on speed for solids? does force of friction depends on speed for fluids? Defend your answer with example.

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