Question #856
Based on the diagram, identify value A for a two-leg sling:
W oparciu o przedstawiony rysunek wskaż wartość A dla zawiesia dwucięgnowego:
Open full-size illustrationa
120%
120%
b
90%
90%
c
70%
70%
d
50%
50%
Correct answer
Why?
With the legs of the two-leg sling (zawiesie dwucięgnowe) at 60° from vertical, A is 50% of the capacity of the vertical-leg arrangement because cos 60° = 0.5. Spreading the legs farther apart increases their tension for the same load mass. The 70% value applies at 45° from vertical, not 60°.