Which of the following situations involves static friction?
Understand the Problem
The question asks you to identify the scenario where static friction is involved. Static friction is the force that prevents an object from starting to move when a force is applied. It is a resistive force that opposes the initiation of motion.
Answer
Static friction happens when surfaces are not in motion relative to each other.
Static friction occurs when two surfaces are not moving relative to each other, resisting the start of motion. Examples include a book resting on a table or your feet on the ground as you begin to walk.
Answer for screen readers
Static friction occurs when two surfaces are not moving relative to each other, resisting the start of motion. Examples include a book resting on a table or your feet on the ground as you begin to walk.
More Information
Static friction is what prevents an object from starting to move when a force is applied to it. It can match the applied force up to a limit after which the object will start to move and kinetic friction will take over.
Tips
A common mistake is confusing static and kinetic friction. Static friction acts on objects at rest, while kinetic friction acts on objects in motion.
Sources
- How to Identify Static or Kinetic Friction | Physics - Study.com - study.com
- Static Friction | Definition, Formula & Examples - Lesson - Study.com - study.com
- Types of Friction | CK-12 Foundation - flexbooks.ck12.org
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