find the altitude where the density is 0.001988 slug/ft3
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find the altitude where the density is 0.001988 slug/ft3
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- If the intensity of the line loading is w=[(40xx2)/40]lb/in., where x is measured in inches, use integration to find the resultant.Find the elevation h (km) where the weight of an object is one-tenth its weight on the surface of the earth.Calculate the resultant force caused by the water acting on the parabolic arch dam. The water levels are 16 ft on the upstream side and zero on the downstream side. For water, use =62.4lb/ft3.
- The hemispherical glass bowl is filled with water. Find the location y of the center of gravity of the filled bowl. Approximate the bowl as a thin shell of radius R=6.15in. Use 1=162lb/ft3 for glass and 2=62.4lb/ft3 for water.A man weighs 170 lb on the surface of the earth. Compute his weight in an airplane flying at an elevation of 28 000 ft.Using the method of composite areas, find the dimension h that maximizes the centroid coordinate y of the plane region shown.
- Determine the dimensions of constants A and B far which the following equation is dimensionally homogeneous: F=Akx2sinBxk where F is a force, x is a distance, and k represents stiffness (dimensions: [FL1]).The parametric equations of the plane curve known as a cycloid are x=a(sin) and y=a(1cos). Use integration to find the coordinates of the centroid of the cycloid obtained by varying from 0 to 2 rad.The center of gravity of the plane wire figure is located at G. Determine the lengths a and b.
- A 6-in. diameter hole is drilled in the conical frustum. Calculate the volume and the surface area of the resulting body.Compute the centroidal y-coordinate of the plane curve y=ex2 between x=0 and x=1, where x and y are measured in meters. Use Simpsons method of integration with x=0.25.A compact car travels 30 mi on one gallon of gas. Determine the gas mileage of the car in km/L. Note that 1gal=3.785L.