The following problems are to be solved using the principle of virtual work.ProblemThe col...

The following problems are to be solved using the principle of virtual work.

Problem

The collar A slides on the smooth vertical bar. The masses are mA = 20 kg and mB = 10 kg.

(a) If the collar A is given an upward virtual displacement δy, what is the resulting downward displacement of the mass B?

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(b) Use virtual work to determine the tension in the spring.