PROBLEMS 



419 



Graphic 5tatics. 



Problem 3. 



7^|U.75,7.TK3 ^W*'** ^ k-Pt^/ \ 



^XCT -' f>> >*""!^ \v 



j-2>c KU^^ ixQx w *J 



12.2 



p * T*>5^ 

 ** 



19.-5S 

 210 



*^. d 1 



+&**-+ ^^ 



^/ / T'T^ 



/ / 



//^ >' VhM c/ /, 



' b c 



Xb' \ 



(^.75, 7.7 ^ \ x \ 



X 



Xfc-2 



E by check eejuil. polygon 

 =f'xH- 18.1 .19= 3.42 inrlons 



The forces are given in tons. Check by using a second pole and 

 equilibrium polygon; also draw a line through the intersection of the 

 corresponding rays, and check as in Problem 2. Give amount and 

 direction of the equilibrant. Scale of forces, i" = 5 tons. 



