<span>Answer:
The spring force at A and B can be obtained
directly by summing moments_aJx)ut points B and A. respectively.
(+ IM, = 0; F A (1)- 392.4(3) =0 F A = 1 177.2 N
C+ 1M a = 0; F, (1) -392.4(4) = 0 F, = 1569.6 N
Spring Formula : Applying A = - , we have
Inn I S ,
A a = - 1 . 177 ' -- = 0.07*48 m A, = 156 ~ = 0. 10464 ra
x 15(103) 15(103)
Geometry : The angle of tilt a is
a - tan' 1 ^
0.10464 + 0.07848
1
10.4°
v * F
Z te</span>
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