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Moments of Inertia In Exercises 37-40, use the following formulas for the moments of inertia about the coordinate axes of a surface lamina of density
Verify that the moment of inertia of a spherical shell of uniform density about its diameter is
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Chapter 15 Solutions
Calculus: Early Transcendental Functions
- Determine the moments of inertia of the Z-section about its centroidal xo- and yo-axes. 25 mm Answers: Ixo Yo 165 mm = = i -110 mm i 25 mm 110 mm 25 mm (106) mm 4 (106) mm4arrow_forwardCalculate the fluid force on one side of the plate using the coordinate system shown below. Assume the density is 62.4 lb/ft³. y (ft) Surface of pool HA ►x (ft) Depth -y=-1 |y| (x,y) - 11 The fluid force on one side of the plate is lb.arrow_forwardHeat transfer Fourier’s Law of heat transfer (or heat conduction) states that the heat flow vector F at a point is proportional to the negative gradient of the temperature; that is, F = -k∇T, which means that heat energy flows from hot regions to cold regions. The constant k > 0 is called the conductivity, which has metric units of J/(m-s-K). A temperature function for a region D is given. Find the net outward heat flux ∫∫S F ⋅ n dS = -k∫∫S ∇T ⋅ n dS across the boundary S of D. In some cases, it may be easier to use the Divergence Theorem and evaluate a triple integral. Assume k = 1. T(x, y, z) = 100e-x2 - y2 - z2; D is the sphere of radius a centered at the origin.arrow_forward
- Heat transfer Fourier’s Law of heat transfer (or heat conduction) states that the heat flow vector F at a point is proportional to the negative gradient of the temperature; that is, F = -k∇T, which means that heat energy flows from hot regions to cold regions. The constant k > 0 is called the conductivity, which has metric units of J/(m-s-K). A temperature function for a region D is given. Find the net outward heat flux ∫∫S F ⋅ n dS = -k∫∫S ∇T ⋅ n dS across the boundary S of D. In some cases, it may be easier to use the Divergence Theorem and evaluate a triple integral. Assume k = 1. T(x, y, z) = 100 + x2 + y2 + z2;;D = {(x, y, z): 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0 ≤ z ≤ 1}arrow_forwardHeat transfer Fourier’s Law of heat transfer (or heat conduction) states that the heat flow vector F at a point is proportional to the negative gradient of the temperature; that is, F = -k∇T, which means that heat energy flows from hot regions to cold regions. The constant k > 0 is called the conductivity, which has metric units of J/(m-s-K). A temperature function for a region D is given. Find the net outward heat flux ∫∫S F ⋅ n dS = -k∫∫S ∇T ⋅ n dS across the boundary S of D. In some cases, it may be easier to use the Divergence Theorem and evaluate a triple integral. Assume k = 1. T(x, y, z) = 100 + x + 2y + z;D = {(x, y, z): 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0 ≤ z ≤ 1}arrow_forwardDetermine the moment of inertia about y-axis 240 mm r= 90 mm 120 mm 344083275 mm4 O 459000000 mm4 O 825891896 mm4arrow_forward
- Heat transfer Fourier’s Law of heat transfer (or heat conduction) states that the heat flow vector F at a point is proportional to the negative gradient of the temperature; that is, F = -k∇T, which means that heat energy flows from hot regions to cold regions. The constant k > 0 is called the conductivity, which has metric units of J/(m-s-K). A temperature function for a region D is given. Find the net outward heat flux ∫∫S F ⋅ n dS = -k∫∫S ∇T ⋅ n dS across the boundary S of D. In some cases, it may be easier to use the Divergence Theorem and evaluate a triple integral. Assume k = 1. T(x, y, z) = 100 + e-z;D = {(x, y, z): 0 ≤ x ≤ 1, 0 ≤ y ≤ 1, 0 ≤ z ≤ 1}arrow_forwardCalculate the fluid force on one side of the plate The fluid force on one side of the plate is using the coordinate system shown below. Assume Ib. the density is 62.4 lb/ ft3. ... у (f) Surface of pool x (ft) -у3 — 2 Depth \y| (x,y) 7arrow_forwardFind the maximum rate of change of f(x, y, z) = x + y/z at the point (1, 1, –5) and the direction in which it occurs. Maximum rate of change: Direction (unit vector) in which it occurs:arrow_forward
- Calculate the line integral of the vector field F = (y, x,x² + y² ) around the boundary curve, the curl of the vector field, and the surface integral of the curl of the vector field. The surface S is the upper hemisphere x² + y + z? = 25, z 2 0 oriented with an upward-pointing normal. (Use symbolic notation and fractions where needed.) F. dr = curl(F) =arrow_forwardDetermine the center of gravity location for the destinations and shipping quantities shown below Destination (x,y) Quantity D1 3,5 600 D2 5,1 400 D3 6,7 300 D4 8,4 500arrow_forwardCalculate the fluid force on one side of the plate using the coordinate system shown below. Assume the density is 62.4 The fluid force on one side of the plate is lb/ft³. lb. (...) y (ft) Surface of pool ►x (ft) Depth -y = -2 |y| (x,y) - 12 Carrow_forward
- Algebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage