Assignment 1
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Q1. Draw complete free-body diagrams for the bodies specified in the following problems. Include
the weight of member on the diagram unless the problem statement indicates that the weight of the
member is to be neglected. Assume that all the surfaces are smooth unless indicated otherwise.
1-1
(a) The bar AB;
(b) the post CD;
(c) the bar AB + the post CD
1-2
(a) The bar AB and (b) the bar CB. Neglect
the weights of the bars.
Fig. 1-2
Fig. 1-1
1-3
(a) The bar BE and (b) the bar DF. Neglect
the weights of the bars.
1-4
(a) The bar AB.
Fig. 1-4
Fig. 1-3
Q2. Calculate the support reactions of the following structures
(a)
(b)
(c)
Q3. All the structures have a pin support and a roller support except No. 4 in the first column.
Determine support reactions in the following structures.
Q4.
(a) Calculate the support reactions at A and D, where A is a fixed support, D is a roller support,
and B is a pin connection. Express your results using q and L.
(b) Calculate the support reactions at A and D and find the internal forces at point B and C.

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