Question

If the supports are properly aligned then the reaction forces developed are adequate to support the body.

(a) Statement is true only in 2D

(b) Statement is true only in 3D

(c) Statement is true throughout

(d) Statement is true only in 1D

I had been asked this question in exam.

My doubt is from Equilibrium in Three Dimensions topic in portion Equilibrium of a Rigid Body of Engineering Mechanics

Answer 1

Right option is (c) Statement is true throughout

To explain: This is the basic nature observed during the experiments on the beams an all the support system. The dimension doesn’t affect the equilibrium conditions. The main motto is to achieve the equilibrium. It is achieved by equating the net force equal to zero.