Question 7 of 11
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A rectangular polypropylene [$E = 6,200 \text{ MPa}$] bar (1) is connected to a rectangular nylon [$E = 1,400 \text{ MPa}$] bar (2) at flange B. The
assembly (shown in the figure) is connected to rigid supports at A and C. Bar (1) has a cross-sectional area of $A_1 = 1080 \text{ mm}^2$ and a
length of $L_1 = 1590 \text{ mm}$. Bar (2) has a cross-sectional area of $A_2 = 2870 \text{ mm}^2$ and a length of $L_2 = 430 \text{ mm}$. After two loads of
$P = 4.3 \text{ kN}$ are applied to flange B, determine:
(a) the forces in bars (1) and (2).
(b) the deflection of flange B.
$L_1$
$L_2$
P
A
(1)
P
B
(2)
C
(a) $F_1 =$
$F_2 =$
(b) $u_B =$
$\text{kN}$
$\text{kN}$
$\text{mm}$