A car parked at the top of a hill does not move down the hill due to what type of friction?
Question
A car parked at the top of a hill does not move down the hill due to what type of friction?
Solution
The car parked at the top of a hill does not move down the hill due to static friction. Here's a step-by-step explanation:
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When the car is parked and not moving, it has potential energy due to its position at the top of the hill.
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Friction is a force that opposes motion. In this case, the force of gravity is trying to pull the car down the hill, but friction is opposing this motion.
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There are different types of friction, including static friction and kinetic friction. Static friction is the force that keeps an object at rest from moving. Kinetic friction is the force that opposes motion once the object is already moving.
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Since the car is not moving, the type of friction at play is static friction. This force is strong enough to oppose the force of gravity and keep the car from rolling down the hill.
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If the force of gravity becomes stronger than the static friction (for example, if the hill were steeper or the car were heavier), then the car would start to move, and kinetic friction would come into play.
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