The rigid beam a c ac is supported by a smooth pin b b, two rods at points a a and c c and is subjected to a load p p as illustrated below. the inclined rod ( 1 ) (1) has stiffness k 1 = 237 n / m m k1=237 n/mm, length l = 200 m m l=200 mm and inclination θ = 27 o θ=27o. the vertical rod ( 2 ) (2) has stiffness k 2 = 148 n / m m k2=148 n/mm and the same length l l. neglect the weight of the beam a c ac and assume that when p = 0 p=0 the rigid bar is in the horizontal position and the rods are stress-free. assume small rotations.