The roofs of stadiums, cable car systems, and suspension bridges all use cables to support loads over huge spans. On permanent guys on buildings like microwave towers and derricks, they are widely employed. In times of erection, they are also employed for temporary men. A cable only has direct tension acting upon it. They are too adaptable to handle any situation.

Concentrated loads, evenly distributed loads throughout its length, and evenly distributed loads over the horizontal span are all carried by cables. Under concentrated loads, it assumes the shape of a polygon; under uniform loads throughout its length (like its own weight); and under uniform weights along the horizontal span, it assumes the shape of a parabola.

EXPERIMENT:

• Study the Extension of each spring Balance Left & Right Both.
• Study of the effect of a point load

TECHNICAL SPECIFICATION: –

• Apparatus Consists of two mild steel cables 0.5cm diameter in cross section and 150cm long, pinned to two supports 90cm apart situated symmetrically.
• One of the ends can be converted to a roller by applying a known load at the end with the help of suspended pulley system.
• Vertical loads can be applied at various points along the span of the beam.
• A dial gauge with 25mm travel (with a magnetic base) is to be supplied with the apparatus complete with a supporting stand and a set of weights.