Consider a horizontal metal cantilever beam that is protruding from the side of

Question

Consider a horizontal metal cantilever beam that is protruding from the side of building. Because of its own weight and the load that it supports at the end, the beam sags at that end. Which of the following statements (1, 2, 3, 4) is/are TRUE?

"1) the top half of the beam is under tension."

"2) the bottom half of the beam is under tension."

"3) the bottom half of the beam is under compression."

"4) the top half of the beam is under compression."

"Both 1) and 3) are true."

"Both 2) and 4) are true."

Explanation / Answer

Beams are traditionally descriptions of building or civil engineering structural elements, but smaller structures such as truck or automobile frames, machine frames, and other mechanical or structural systems contain beam structures that are designed and analyzed in a similar fashion.

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