Answers for ECMM149 exam paper January 2019

Question 1
(a) i) det(A) = 0

ii) β=4

iii) ൞
− ଵ
଻
ଵଵ
଻
1
ൢ + ൞
ହ
଻
ଵ
଻
0
ൢ
(b)
i) ௗ = 9.95 /
ii) |()| = 7 ∙ 10ିସ 9 ∙ 10ିସ 1.7 ∙ 10ିଷ 1.6 ∙ 10ିଶ 1.6 ∙ 10ିଷ 8 ∙ 10ିସ [m/N]
iii) Same as above.


Question 2
(a) Structure (a) indeterminate degree 4
Structure (b) indeterminate degree 1
Structure (c) indeterminate degree 2
(b)









Question 2
(d)

Question 3



(c)


(d)