Question

Question )

a)

1n Im 3 m

For the composite area shown, determine the position of the centroid, (x,y)

options:

a)	none of these are correct.
b)	(0,0)
c)	(4.8, 2.6) m
d)	(9, 4.5) m
e)	(2.6, 4.8) m

b)

(x,y) dy

For the triangular shape shown, locate the horizontal position of the centroid, x.

Question 17 options:

a)	b/2
b)	h/2
c)	2h/3
d)	h/3
e)	b/3

c)

(x,y) dy

For the triangular shape shown, locate the vertical position of the centroid, y.

options:

a)	b/3
b)	3b/4
c)	h/2
d)	b/2
e)	h/3

d)

100 mm 400 mm 400 mm 100 mm 1-100 mm 600 mm

For the cross-section of the shape shown, Determine the moment of inertia I_x of this area about the horizontal x axis that passes through the centroid.

options:

a)	8.14 x 106 mm4
b)	none of these.
c)	1.31 x 106 mm4
d)	5.6 x 109 mm4
e)	2.9 x 109 mm4

e)

100 mm 400 mm 400 mm 100 mm 1-100 mm 600 mm

For the cross section of the shape shown, determine the moment of inertia of this area I_yabout the vertical y axis that passes through the centroid.

options:

a)	none of these.
b)	8.14 x 106 mm4
c)	5.6 x 109 mm4
d)	1.31 x 106 mm4
e)	2.9 x 109 mm4

Answer 1

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