A 40 M Steel Beam with a Cross Sectional Area of of 1.0

question 40

Multiple Choice

A 4.0 m steel beam with a cross sectional area of 1.0 x 10^-2 m² and a Young's modulus of 2.0 x 10¹¹ N/m² is wedged horizontally between two vertical walls.In order to wedge the beam, it is compressed by 0.020 mm.If the coefficient of static friction between the beam and the walls is 0.35, the maximum mass (including its own) it can bear without slipping is:

• A)0 kg
• B)36 kg
• C)70 kg
• D)360 kg
• E)700 kg

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Definitions:

Sexually Transmitted Infection

An infectious disease that is spread through sexual contact.

Teratogen

An agent or factor that causes malformation of an embryo or fetus.

Placenta

A critical organ in mammalian embryos, linking the mother to the fetus, it facilitates the exchange of nutrients, waste, and gases.

Zinc

A chemical element with symbol Zn and atomic number 30, necessary for human health and involved in numerous bodily processes.