3. A pentagonal pyramid of base edge 25 mm and height 40 mm rests with its base on HP and with an edge of base perpendicular to VP. It is cut by a section plane perpendicular to VP such that the true shape of the section is an isosceles triangle of maximum possible base and maximum height Draw the sectional plan and true shape of the section. Also measure the inclination of the cutting plane with HP Hint After keeping the solid in desired position, draw sectional top view as shown. Then draw sectional front view and true shape AAcube of eide 35 mm ie kant on HRith base ally inclined to VR t ie cut bu a plane pernendiculer to VR and inclined to HP

3. A pentagonal pyramid of base edge 25 mm and height 40 mm rests with its base on HP and with an edge of base perpendicular to VP. It is cut by a section plane perpendicular to VP such that the true shape of the section is an isosceles triangle of maximum possible base and maximum height Draw the sectional plan and true shape of the section. Also measure the inclination of the cutting plane with HP Hint After keeping the solid in desired position, draw sectional top view as shown. Then draw sectional front view and true shape AAcube of eide 35 mm ie kant on HRith base ally inclined to VR t ie cut bu a plane pernendiculer to VR and inclined to HP

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter9: Moments And Products Of Inertia Of Areas

Section: Chapter Questions

Problem 9.13P: Figure (a) shows the cross section of a column that uses a structural shape known as W867...

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A centroid is an object's geometric center. For an object of uniform composition, its centroid is also its center of mass. Often the centroid of a complex composite body is found by, first, cutting the body into regular shaped segments, and then by calculating the weighted average of the segments' centroids.An object is made from a uniform piece of sheet metal. The object has dimensions of a = 1.05 ft , where a is the diameter of the semi-circle,b = 3.74 ft , and c = 2.45 ft . A hole with diameter d = 0.700 ft is centered at (0.925,0.525) . Part A Find the area of the body. (Figure 1) Express your answer numerically in feet squared to three significant figures. Part B Find x¯ , the x -coordinate of the body's centroid. (Figure 1) Express your answer numerically in feet to three significant figures. Part C Find y¯ , the y -coordinate of the body's centroid. (Figure 1) Express your answer numerically in feet to three significant figures.