Question: Problem 3 : solve the problem with method of principle of virtual work, assume member stiffness is EA . a . Horizontal displacement of point

Problem 3: solve the problem with method of principle of virtual work, assume member stiffness is EA.
a. Horizontal displacement of point C;
b. If without the external load, solve the horizontal displacement of point C
when member DB is uniformly heated from 0\deg Cto 100\deg C. Thermal
coefficient is \alpha
c. If without the external load, solve the horizontal displacement of point C when member DB is 5mm short
Problem 3 : solve the problem with method of

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