Due to flexibility property cable, it offers no resistance to bending. As bending is seen in beams and all solid structures. Thus bending moment produced in cables are not affecting cables much. So tensile force which is being produced is acting in tangential direction to points of cable along its lengths.

None.

The question asked is asking for magnitude of unit vector of resultant vector, thus answer is 1. Wher magnitude of vector is any quantity, but unit vector will have magnitude equal to unity. And direction given by unit vector will be in same direction as that of vector.

The moment axis, force and perpendicular distance is lying in three dimensional Cartesian. It doesn?t lye on single plane. It also doesn?t lye in a single line. Nor in direction of force. Thus y all lye in planes which are perpendicular to each or.

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

The various points in cables are facing constant forces. The forces are tensile forces. This is because as cables are subjected to loadings loads tends to stretch cables in direction parallel to its round area region. Thus points face tensile forces which are parallel to cable length.

The loading in cables doesn?t affect geometry of cables. This is because of assumptions which we have taken. The first one that cables are perfectly elastic. And second one that cables are inextensible.

The forces which are acting tangentially to body of beams are called as shear forces. These are forces which are giving moment to beams. These forces are being calculated by help of equilibrium equations. Thus forces which are parallel to surface are shear forces.

The determination of internal forces is done by various methods among which distribution of load method is one. Also, we have method of joints, which is done so as to determine internal forces which are being developed in trusses or frames. This is done as to design m. In this method, loading acting upward is considered to be positive.

The loading acting upward is considered to be positive. This is done as to decrease time used for calculations. If method of sections is being applied at complex sections for determination of unknown forces, much time is required for it. Thus main motto is to make calculations easy and make less use of time.