Learning Path
Question & Answer
Choose the Best Answer
The static friction force has been exceeded by the gravitational force.
The kinetic friction force is stronger than the static friction force.
The weight of the object has decreased below the threshold for static friction.
The surface has become smoother, reducing friction.
Understanding the Answer
Let's break down why this is correct
The object starts moving when the downward pull from gravity is stronger than the maximum static friction that keeps it still. Other options are incorrect because Many think kinetic friction is higher than static friction, but it is usually lower or equal; The weight of the object does not shrink when it slides.
Key Concepts
Friction Forces Analysis (Part 3)
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Deep Dive: Friction Forces Analysis (Part 3)
Master the fundamentals
Definition
Friction Forces Analysis involves studying how friction changes as an object's weight or surface conditions vary. It explores static and kinetic friction, highlighting how friction can transition from opposing motion to supporting it.
Topic Definition
Friction Forces Analysis involves studying how friction changes as an object's weight or surface conditions vary. It explores static and kinetic friction, highlighting how friction can transition from opposing motion to supporting it.
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