The 'funicular polygon' for a set of concentrated loads gives the shape of:
Choose the correct answer
Bending moment diagram only
The cable shape under those specific loads — pure tension in cable segments (or compression in equivalent arch)
Deflection of a beam
Shear force diagram
Correct Answer
B. The cable shape under those specific loads — pure tension in cable segments (or compression in equivalent arch)
Why is this the answer?
Funicular polygon: graphical method combining force polygon (vector polygon of loads + reactions) with space diagram to find the shape a cable or arch must take to carry those specific concentrated loads in pure tension or compression (no bending). For a cable: funicular polygon = cable shape. Rays from pole in force polygon correspond to cable segments. Useful for finding reactions and cable geometry.
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