Question

If the unknown variables in the calculations are more than the known quantities, then the number of equations required to solve all the unknown variables are for cable subjected to its own weight?

(a) Infinite

(b) Finite

(c) Not possible

(d) Question fault

I have been asked this question in an interview for internship.

Query is from Cables Subjected to its Own Weight topic in section Internal Forces of Engineering Mechanics

Answer 1

Correct answer is (b) Finite

To elaborate: Whatever be the calculation involved, the unknown variables will be ultimately come out from the equations. The proper use of the known quantities and the multiuse of various calculation techniques will ultimately give up the results. Thus whether it may be the case of the cables or the beams the equations if applied properly will result in the determination of the unknowns.