Consider wind at 20°C and 1 atm blowing past a chimney30 m high and 80 cm in diameter. If the chimney may fractureat a base bending moment of 486 kN?m, and its dragcoeffi cient based on frontal area is 0.5, what is the approximatemaximum allowable wind velocity to avoid fracture?(a) 50 mi/h, (b) 75 mi/h, (c) 100 mi/h, (d) 125 mi/h,(e) 150 mi/h

Q: 1. A hydrofoil 0.366 m long and 1.82 m wide is placed in a water flow of 12.9 m/s, with p = 1025.3…

A: As per our guidelines, In case of multiple questions experts can only provide solution to first…

Q: Baseball drag data from the University of Texas are shownin Fig.  A baseball weighs approximately…

A: Given : The weight of baseball = 5.12 oz = 0.00994 slug The velocity of baseball = 108.1 mi/hr The…

Q: 1. A hydrofoil 0.366 m long and 1.82 m wide is placed in a water flow of 12.9 m/s, p = 1025.3 kg/m…

A: Given Data⇒ Length of HydrofoilL=0.366 m Widthb=1.82 m Water Flow(U)=12.9ms Densityρ=1025.3kgm3…

Q: A fishnet consists of 1-mm-diameter strings overlappedand knotted to form 1-by-1-cm squares.…

A: The properties of sea-water at 20 degrees Celsius are: Also, let us consider that the value of the…

Q: A smooth wooden sphere (SG = 0.65) is connected by athin rigid rod to a hinge in a wind tunnel, as…

A: Consider the free body diagram of the ball and rod system as shown below. Here, The coefficient of…

Q: A boat moves through water (T = 40°F), at 18.0 mi/h. A flat portion of the boat hull is 3.3 ft long,…

A: The properties of water at T = 40 oF are written as, The velocity of the boat is given as, The…

Q: The momentum thickness OM for laminar flow over a flat plate is (115/1134) 6. Find the following: a)…

A:

Q: The centerboard on a sailboat is 3 ft long parallel to theflow and protrudes 7 ft down below the…

A: Given data: *The length of the sailboat is l=3 ft=0.9144 m. *The length protrudes down below the…

Q: Assume the stabilizer of an airplane is a flat plate. If the transition /critical RN 750,000, what…

A: Given:- RN=750000 Chord=0.81m v=44.7 m/s2 Rectangular span:=1.73m To find:- Drag

Q: A ship is 150 m long and has a wetted area of 5000 m2.If it is encrusted with barnacles, the ship…

A: For seawater at 20ºC , take p=1025 kg/m3  v=0.00107 Kg/m.s. Convert 15kn=7.72 m/s. Now determine the…

Q: A long, slender, smooth 3-cm-diameter flagpole bendsalarmingly in 20 mi/h sea-level winds, causing…

A: Given data: The diameter flagpole is D = 3 cm = 0.03 m The speed of wind is v = 20 mi/h Since, 1…

Q: In order to avoid boundary layer interference, engineers design a “boundary layer scoop” to skim off…

A:

Q: nsider an infinite wing with a NACA 1412 airfoil section and a chord length of 3 ft. The wing is at…

A:

Q: A heavy sphere attached to a string should hang at an angleθ when immersed in a stream of velocity…

A: Given, U = 40 m/s diameter (d) = 3 cm = 0.03 m Specific Gravity of steel = 7.86  Freebody diagram,…

Q: Wind at 20°C and 1 atm blows at 75 km/h past a flagpole18 m high and 20 cm in diameter. The drag…

A: Given data

Q: Air at 20°C and 1 atm fl ows at 50 ft/s past a thin fl at platewhose area (bL) is 24 ft2. If the…

A:

Q: A flagpole 20m high with a cross section shape of a square with 1000mm sides is exposed to sea level…

A: Given:flagpole height=20 mv=50 m/sTo=30+273=303 KSide, a1=1000 mm or 1 mPo=101325 Paμ=1.78×10-5…

Q: The 2013 Toyota Camry has an empty weight of 3190 lbf, a frontal area of 22.06 ft2, and a drag…

A: Write the given value using suitable variables. Here W signifies Camry weight, A signifies frontal…

Q: P6.26 A 775 N skydiver reaches a terminal velocity of 240 km/b during free fall. If the frontal area…

A:

Q: In gliding (unpowered) flight, the lift and drag are in equilibriumwith the weight. Show that if…

A: The force of weight is balanced out by both drag and lift force, where the drag force acts in the…

Q: Hoerner states that the drag coeffi -cient of a flag of 2:1 aspect ratio is 0.11 based on the…

A: Two flags are present of which one is state flag and the other one is national flag of same area 2H…

Q: A flying wing weighing 20,000 N has a NACA 65‐418 airfoil section, an area of 30 m2, and an aspect…

A: Given Data The weight of the plane is: W=20000 N The area of the plane is: A=30 m2 Aspect ratio is:…

Q: Assume the stabilizer of an airplane is a flat plate. If the transition /critical RN 750,000, what…

A:

Q: Air flows at Ma = 2.5 past a half-wedge airfoil whoseangles are 4°, as in Fig.  Compute the lift and…

A: a) The lift and drag coefficient at α=0   CL=0CD=42.52-102+12tan24++0=0.0042

Q: Q1/ Boeing 737 - 60 flies at altitude 15000m above sea level with speed 85 m/s and total drag…

A: Given data: -  The speed of the Boeing 737 - 60 is v = 85 m/s. The density of air at this condition…

Q: Fluid Mechanics problem: A pickup truck has a clean drag area CDA of 35 ft2. Estimate the…

A: Given data: The drag force relation can be expressed as, Here ρ is the density of the fluid, in…

Q: A light aircraft flies at 30 m/s in the air at 20°C and 1 atm.Its wing is a NACA 0009 airfoil, with…

A: (a) Calculate the Reynolds number for the flow based on the chord length. Rec=ρUcμ Here, c is the…

Q: P3.48 The small boat is driven at steady speed Vo by compressed air issuing from a 3-cm-diameter…

A:

Q: Water at 20°C flows at 5 m/s past a 2-m-wide sharp flatthe plate. (a) Estimate the boundary layer…

A: The properties of water at 20 degrees Celsius are: The Reynolds number of the flow is The critical…

Q: Based strictly on your understanding of the flat-plate theoryplus adverse and favorable pressure…

A: From left to right flow, Iniatialy larger pressure gradient but as flow moves past aerofoil lesser…

Q: A hydrofoil 0.366 m long and 1.82 m wide is placed in a water flow of 12.9 m/s, with p = 1025.3 kg/m…

A: Dimensions of hydrofoil, Length, L=0.366m and width, W=1.82m  Free stream velocity, U0=12.9m/s…

Q: A tractor-trailer truck is coasting freely, with no brakes,down an 8° slope at 1000-m standard…

A: Given data: The slop is θ = 8o. The standard altitude is h = 1000 m. The rolling resistance for…

Q: When immersed in a uniform stream V, a heavy rod hingedat A will hang at Pode’s angle θ, after an…

A: Given, L = 40 cm D = 1 cm V = 35 m/s

Q: The 2013 Toyota Camry has an empty weight of 3190 lbf,a frontal area of 22.06 ft2, and a drag…

A: Given ,Weight of the Vehicle  W = 3190 lbfFrental Area       A = 22.06 ft2Rolling Resistance  Crr =…

Q: Consider a steel sphere (SG = 7.85) of diameter 2 cm,dropped from rest in the water at 208C. Assume…

A: The drag coefficient is CD=0.47. The diameter of the steel sphere is d=2 cm×1 m100 cm=0.02 m

Q: P6.31 (a) A luxury sports car has a frontal area of 2.08 m? and a 0.29 coefficient of drag at 95…

A: Given data: (a)  The frontal area of the car is A=2.08 m2 The coefficient of drag is CD=0.29 The…

Q: The main cross-cable between towers of a coastal suspensionbridge is 60 cm in diameter and 90 m…

A: Given data: Diameter of cross-cable = 60 cm                     Length of cross cable = 90 m…

Q: Two baseballs of diameter 7.35 cm are connected to a rod7 mm in diameter and 56 cm long, as in Fig.…

A: Given data: The diameter of baseball, db = 7.35 cm. The diameter of the rod, dr = 7 mm. The total…

Q: When tested in water at 20 ° C fl owing at 2 m/s, an 8 - cmdiametersphere has a measured drag of 5…

A: Given data V=2 m/secρw=998 kg/m3μw=1×10-3 pa·sec For prototype dp=1.5 mρa=1.2 kg/m3μa=1.8×10-5…

Q: 7.27 A thin smooth disk of diametd., D is immersed parallel to a uniform stream of velocity U.…

A:

Q: A wing of 2 percent camber, 5-in chord, and 30-in span istested at a certain angle of attack in a…

A: Given data as per question span of wing =30 in velocity=200 ft/s  lift=30 lbf Drag =1.5 lbf

Q: Icebergs can be driven at substantial speeds by the wind.Let the iceberg be idealized as a large,…

A: Drag force due to water is FDw=CDw12ρwAV2 Drag force due to air is FDa=CDa12ρaAU-V2 By taking the…

Q: A Kelvin oval is formed by a line–vortex pair with K =9 m2/s, a = 1 m, and U =10 m/s. What are the…

A: Given data: The stream velocity, U = 10 m/s. The value of a, a = 1 m. The value of k, k = 9 m2/s.…

Q: Joe can pedal his bike at 10 m/s on a straight levelroad with no wind. The rolling resistance of his…

A: Given data: The density of air at 20 degrees Celsius is

Q: Assume the stabilizer of an airplane is a flat plate. If the   transition /critical RN 750,000, what…

A:

Combined Loading

Any functioning component, such as machine parts, structural members, pressure vessels, and so on, are all under the influence of more than one force. When anybody is under the influence of more than one force such as shear forces, bending moments, axial forces, torsion, and so on, then such body is said to be under combined loading. A very practical example of combined loading is the crankshaft of an internal combustion engine (IC engine). The crankshaft of the IC engine is under high rpm, which is caused due to the torsional forces. Due to the presence of piston, counterbalances, and internal imbalances, the crankshaft experiences lateral forces and due to the rise in temperature, the crankshaft undergoes thermal expansion, which pulls the crankshaft along the axial direction and lateral direction. The presence of unbalanced loads along the periphery of the crankshaft also induces a bending moment.