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Three Wire Suspension (SMT-MM-25)
Verification of equilibrium where sums of horizontal
and vertical forces are zero; investigate redundancy
of vertical tie in a three wire suspension system.
The apparatus consists of a bench mounted free
standing backboard with 3 wires attached at approx.
45 degrees, 60 degree and 90 degree to the
horizontal and all meeting at a common ring.
Load hanger attached to the common ring to load the
A free standing backboard provides supports for three tensile suspenders that meet at a ring
carrying a load hanger. Spring balances measure the tension in each of the suspenders which
are at about 30 and 45 degrees to the central vertical one. The lengths of each suspender
can be adjusted by a threaded rod attached to the spring balance. A set of calibrated weights
is supplied to apply loading to the wires. An instruction manual is supplied.