A 25-N Crate Is Held at Rest on a Frictionless

question 57

Multiple Choice

A 25-N crate is held at rest on a frictionless incline by a force that is parallel to the incline.If the incline is 25°above the horizontal the magnitude of the applied force is:

• A)4.1 N
• B)4.6 N
• C)8.9 N
• D)11 N
• E)23 N

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Definitions:

Working Backwards

is a problem-solving strategy that involves starting with the goal and sequentially planning the steps in reverse to reach the starting point.

Heuristics

Mental shortcuts or rules of thumb that simplify decision making, but can sometimes lead to cognitive biases.

Mnemonic Devices

Techniques a person can use to help them improve their ability to remember something, often by associating it with something more familiar or patterning.

Cognitive Shortcuts

Heuristic methods or simple strategies used by the human mind to make decisions or solve problems quickly.