%3Cp%3E%3Cspan%20class%3D%22c1%22%3EAn%20artist%20designs%20a%20mobile%20of%20li
ID: 3900995 • Letter: #
Question
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equilibrium about left joint => 30*w1 = 10* w2 => 3w1= w2 => w2 = 3*2.13 = 6.39 units
equilibrium about right joint => 20*w3 = 10* w4 => 2w3=w4
qwuilibrium about central joint => 30*(w1+w2) = 30*(w3+w4) => w1+w2 = w3+w4
solving for w3 and w4 from above eqns => w4 = 2.54 units and w3 = 1.27 units
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