Indeterminacy of a Propped Cantilever
Mediumindeterminacysupports
A planar propped cantilever is fixed at one end and supported by a vertical roller at the other. What is its degree of static indeterminacy?
- A0
- B1
- C2
- D3
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Answer: B. 1
The fixed support supplies three reactions and the roller supplies one, for four unknown reactions. A planar beam has three independent equilibrium equations, so there is one redundant reaction: 4 − 3 = 1.
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