Which of the following statements is true about flexible cables? the tension in a cable is always either tangent to the cable or along it o a cable offers no resistance to bending the sag is the difference in elevation between the lowest point of the cable and a support the span is the horizontal distance between the supports of the cable all of above

All of the above

Explanation:

Flexible cables have characteristic of flexibility in its positioning and when exerted by a force they can be bend.

The tension is directed tangential or along the cable.With bending of a cable up to permissible limits there comes the introduction of sag in the cable which is defined as the difference in  the elevation of the cable at its lowest point and a support as result of its displacement due to some external force.Span is the distance from the center of the main cable to a line drawn straight between the cable supports.

The answer is frictional force