telescoping (mechanics)

Image:Telescopic.svg

Telescoping in mechanics describes the movement of one part sliding out from another, lengthening an object (such as a telescope or the lift arm of an aerial work platform) from its rest state.{{Cite journal |last1=Yu |first1=Christopher |last2=Crane |first2=Keenan |last3=Coros |first3=Stelian |date=2017-08-31 |title=Computational design of telescoping structures |journal=ACM Transactions on Graphics |language=en |volume=36 |issue=4 |pages=1–9 |doi=10.1145/3072959.3073673 |issn=0730-0301|doi-access=free }} In modern equipment this can be achieved by a hydraulics, but pulleys are generally used for simpler designs such as extendable ladders and amateur radio antennas.