A Uniform Plank XY Is Supported by Two Equal 120-N

question 28

Multiple Choice

A uniform plank XY is supported by two equal 120-N forces at X and Y, as shown. The support at X is then moved to Z (half-way to the plank center) . The supporting forces at Y and Z are then:

• A) F_Y = 240 N, F_Z = 120 N
• B) F_Y = 200 N, F_Z = 40 N
• C) F_Y = 40 N, F_Z = 200 N
• D) F_Y = 80 N, F_Z = 160 N
• E) F_Y = 160 N, F_Z = 80 N

---

Definitions:

Reportable Segments

Components of an enterprise about which separate financial information is available and is evaluated regularly by the chief decision-maker in deciding how to allocate resources.

Assets

Economic resources owned or controlled by a business, viewed as having value and expected to provide future benefits to the operations.

Profits

The net income received by a company after deducting all expenses, taxes, and costs.

Unrealized Gain

Profit that has been made on paper from investments but has not yet been converted to cash by selling the asset.