Applied Fluid Mechanics: Global Edition
7th Edition
ISBN: 9781292019611
Author: Robert Mott
Publisher: Pearson Higher Education
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Chapter 17, Problem 17.5PP
A pitcher throws a baseball without spin with a velocity of
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Chapter 17 Solutions
Applied Fluid Mechanics: Global Edition
Ch. 17 - A cylinder 25 mm in diameter is placed...Ch. 17 - As part of an advertising sign on the top of a...Ch. 17 - Determine the terminal velocity (see Section 2.6.4...Ch. 17 - Calculate the moment at the base of a flagpole...Ch. 17 - A pitcher throws a baseball without spin with a...Ch. 17 - A parachute in the form of a hemispherical cup 1.5...Ch. 17 - Calculate the required diameter of a parachute in...Ch. 17 - A ship tows an instrument in the form of a 30...Ch. 17 - A highway sign is being designed to withstand...Ch. 17 - Assuming that a semitrailer behaves as a square...
Ch. 17 - A type of level indicator incorporates four...Ch. 17 - Prob. 17.12PPCh. 17 - A bulk liquid transport truck incorporates a...Ch. 17 - A wing on a race car is supported by two...Ch. 17 - Prob. 17.15PPCh. 17 - The four designs shown in Fig. 17.16 for the cross...Ch. 17 - Prob. 17.17PPCh. 17 - Prob. 17.18PPCh. 17 - An antenna in the shape of a cylindrical rod...Ch. 17 - Prob. 17.20PPCh. 17 - Prob. 17.21PPCh. 17 - Prob. 17.22PPCh. 17 - Assume that curve 2 in Fig. 17.5 is a true...Ch. 17 - Prob. 17.24PPCh. 17 - Prob. 17.25PPCh. 17 - A small, fast boat has a specific resistance ratio...Ch. 17 - Prob. 17.27PPCh. 17 - Assume that Fig. 17.11 shows the performance of...Ch. 17 - Calculate the total drag on an airfoil that has a...Ch. 17 - Prob. 17.30PPCh. 17 - Prob. 17.31PPCh. 17 - Prob. 17.32PPCh. 17 - Prob. 17.33PP
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- A pitcher throws a baseball without spin with a velocity of 20 m/s. If the ball has a circumference of 225 mm, calcu- late the drag force on the ball in air at 30°C.arrow_forwardA 2.4-in-diameter smooth ball rotating at 500 rpm is dropped in a water stream at 60°F flowing at 4 ft/s. Determine the lift and the drag force acting on the ball when it is first dropped in the water.arrow_forwardB2 is flying at an altitude of 43,000 ft and a speed of 400 KTAS under standard atmospheric conditions. If the average aerodynamic chord is 39,6 ft, calculate the Reynolds number and the average % aerodynamic chord present on the wingarrow_forward
- A monoplane weighing 2000 lb has a span of 38 ft. What is the power required to overcome the induced drag when the airplane is at 10000 ft altitude with a velocity of 80 mph?arrow_forwardA non spinning ball having a mass of 3.5 oz is thrown vertically upward with a velocity of 100 mph and has zero velocity at a height of 210 ft above the release point. Assume that the air drag on the ball is constant and find this constant average" air drag. Neglect the buoyant force of air on the ball.arrow_forwardFor a new sailboat, a designer wants to determine the drag force that may be expected at a given speed. To do so, she places a model of the proposed hull in a test channel and uses three cables to keep its bow on the centerline of the channel. Dynamometer readings indicate that for a given speed, the tension is 40 lb in cable AB and 60 lb in cable AE. Determine the drag force exerted on the hull and the tension in cable AC.arrow_forward
- A 1:8 scale tractor model is tested in a pressurized wind tunnel. The width, height and length of the model are 0.305 m; 0.476 m; and 2.48 m. In the test with a wind speed of 75 m/s, the drag force that occurs in the model is 128 N. Determine the aerodynamic drag and the power that the engine must give to the prototype tractor vehicle when running at a speed of 50 km/hour where the wind blows from the front of the tractor at a speed of 10 km/hour.arrow_forwardAnimal Propulsion. Squids and octopuses propel themselves by expelling water. They do this by keeping water in a cavity and then suddenly contracting the cavity to force out the water through an opening. A 6.50 kg squid (including the water in the cavity) at rest suddenly sees a dangerous predator. (a) If the squid has 1.75 kg of water in its cavity, at what speed must it expel this water suddenly to achieve a speed of 2.50 m/s to escape the predator? Ignore any drag effects of the surrounding water. (b) How much kinetic energy does the squid create by this maneuver?arrow_forwardAn aircraft, of mass 2000 kg, is following a circular path in the vertical plane as shown inFigure 2. When the flight path of the aircraft is at an angle of 30 from the horizontal, theaircraft’s velocity is 150 m/sec, the radius of curvature of its trajectory is 1000 metres,and the net thrust (engine thrust minus drag) isT = 30kN and acts along the flight path.Assume that the lift force L is perpendicular to the flight path.Draw a free-body diagram showing all forces acting on the aircraft. Calculate the resultantacceleration and its angle from the flight path. Also calculate the lift force L.arrow_forward
- Jane wants to estimate the drag coefficient of herself on herbicycle. She measures the projected frontal area to be 0.40 m2and the rolling resistance to be 0.80 N . s/m. The mass ofthe bike is 15 kg, while the mass of Jane is 80 kg. Jane coasts down a long hill that has a constant 4° slope. (SeeFig. ) She reaches a terminal (steady-state) speed of14 m/s down the hill. Estimate the aerodynamic drag coefficient CD of the rider and bicycle combination.arrow_forwardA wheel tractor has a 200 HP engine. Calculate the available rimpull of this tractorif it is operating at an altitude of 1,000 m. above sea level, at an averagetemperature of 25oC, and at an average speed of 12 km/hr. Take rimpull efficiencyas 85%.arrow_forwardWhat power is required (at the wheels) for a 1400 kg automobile to climb a 4% grade at a constant speed 30 m/s while it is opposed by drag and rolling resistance forces totaling 500 N?arrow_forward
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