Two Objects, a and B, Are Placed on an Inclined $\mu$

question 38

Multiple Choice

Two objects, A and B, are placed on an inclined plane that can be rotated to different angles of elevation. A starts to slide at twice the angle of elevation that B starts sliding. The respective coefficients for static friction for A and B are $\mu$ _A and $\mu$ _B. Choose the last answer that is correct.

• A) "\(\mu\)_B > \(\mu\)_A"
• B) "\(\mu\)_A > \(\mu\)_B"
• C) "\(\mu\)_B = 2 \(\mu\)_A"
• D) "\(\mu\)_A = 2 \(\mu\)_B"

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Definitions:

Pressure-Flaking

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Multiregional Hypothesis

The hypothesis that modern humans originated through a process of simultaneous local transition from Homo erectus to Homo sapiens throughout the inhabited world.

Recent African Origins Hypothesis

The hypothesis that modern humans are all derived from one single population of archaic Homo sapiens who migrated out of Africa after 100,000 years ago, replacing all other archaic forms due to their superior cultural capabilities; also known as the Eve hypothesis or the out of Africa hypothesis.

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