The equilateral triangular lamina A B C is placed parallel to the H. P. and having the following data: - A=(2, 3), B=(7, 3) left of A. The distance of projectors between A and B = 12 cms. The lamina having a central equilateral hole whose area = 1/4 the area of the lamina ( the sides of the hole being parallel to those of the lamina ) . Required: - (i) Find the side - length of the lamina and that of the hole. (ii) Draw, scale 1:1, the ELEVATION & PLAN of the lamina. AUXILIARY PLANE perpendicular to the V.
The equilateral triangular lamina A B C is placed parallel to the H. P. and having the following data: - A=(2, 3), B=(7, 3) left of A. The distance of projectors between A and B = 12 cms. The lamina having a central equilateral hole whose area = 1/4 the area of the lamina ( the sides of the hole being parallel to those of the lamina ) . Required: - (i) Find the side - length of the lamina and that of the hole. (ii) Draw, scale 1:1, the ELEVATION & PLAN of the lamina. AUXILIARY PLANE perpendicular to the V.
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 9.22P
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![The equilateral triangular lamina A B C is placed parallel to the H. P.
and having the following data: -
A=(2,_3), B=(7, 3) left of A. The distance of projectors between A and B
=
12 cms.
The lamina having a central equilateral hole whose area = 1/4 the area of
the lamina ( the sides of the hole being parallel to those of the lamina ) .
Required: -
(i) Find the side - length of the lamina and that of the hole.
(ii) Draw, scale 1:1, the ELEVATION & PLAN of the lamina.
(iii) Project a view on an AUXILIARY PLANE perpendicular to the V.
P. and making 45° with the H. P.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe48e5cc2-6e90-494f-a3e4-05900ffbdc42%2F1e0c6604-ff1f-4128-93b4-a06c3e82f11f%2F7x5xbv_processed.jpg&w=3840&q=75)
Transcribed Image Text:The equilateral triangular lamina A B C is placed parallel to the H. P.
and having the following data: -
A=(2,_3), B=(7, 3) left of A. The distance of projectors between A and B
=
12 cms.
The lamina having a central equilateral hole whose area = 1/4 the area of
the lamina ( the sides of the hole being parallel to those of the lamina ) .
Required: -
(i) Find the side - length of the lamina and that of the hole.
(ii) Draw, scale 1:1, the ELEVATION & PLAN of the lamina.
(iii) Project a view on an AUXILIARY PLANE perpendicular to the V.
P. and making 45° with the H. P.
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