7.    A steel cable with a radius of 2.0 cm supports a chairlift at a ski area. If the maximum stress is not to exceed 108 N/m2, what is the maximum load the cable can support? 

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mass=m.
g=9.8

Load=mg
radius=2cm
          =0.02
stress=(mg)/3.14*r2.

therefore,
108=(mg)/3.14*(0.02)2
108*3.14*0.02*0.02=mg
mg=0.1357 N

therefore,
load=0.1357 N
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