Chapter 9, Problem 86P

L-length steel with a diameter at the wide end, twice the diameter at the narrow end determine the X and y coordinates of the center of mass of the bar in L. (The density of steel material is constant).

The cube is 12 inches in dimensions. The cylindrical hole is 5 inches in diameter and 6 inches drilled in it. The hole is filled by a metal pin with γm= 50-lb. The wood γw= 50-lb. Locate the center of gravity of the body.

Determine the volume, by using Pappus’ Theorem, generated by revolving the composite areas about the x-axis.

The composite plate is made from both steel (A) and brass (B) segments. Take ρst = 7.85 Mg/m^3 and ρbr = 8.74 Mg/m^3. Suppose that L = 150 mm 1. Determine the Mass   2. Determine location ( x¯, y¯, z¯) of its mass center G

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5/65 Using the methods of this article, determine the sur- face area A and volume V of the body formed by revolving the rectangular area through 360° about the z-axis. x 2 12 mm 35 mm PROBLEM 5/65 8 mm

Determine the volume Vand total surface area A of the solid generated by revolving the area shown through 180° about the z-axis. 43 mm 30 mm 81 mm Answers: V = i mm3 A = mm2

l-length steel with a diameter at the wide end twice the diameter at the narrow end determine the x and y coordinates of the center of mass of the rod in terms of l. (steel material density is constant).

Determine the moment of inertial about an axis perpendicular to the page and passing through the pin at O. The thin plate has a hole in its center. Its thickness is 50 mm and the material has a density of ρ = 50 kg/m^3