(Solved): Q-3 (25 pts) The steel curved bar (quarter circle) shown has a square cross section \( 5^{*} 5 \ma ...

Q-3 (25 pts) The steel curved bar (quarter circle) shown has a square cross section \( 5^{*} 5 \mathrm{~mm} \) and a mean radius \( \mathrm{R}=100 \mathrm{~mm} \). A force \( \mathrm{P}=20 \mathrm{~N} \) is applied as shown. Using Castigliano's method, determine: a. Vertical deflection at B b. Horizontal deflection at B Hint: \( R / h>10 h= \) width of curved bar All answers must have units All answers must be boxed