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Why did the mass move in Case 3? Static Friction was greater than the Applied Force. The Applied Force was greater than Static Friction. Kinetic (Dynamic) Friction was greater than the Applied Force Static Friction was equal to the Applied Force.

Ask by Nichols Simmons. in the United States
Jan 25,2025

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The mass moved in Case 3 because the Applied Force was greater than Static Friction.

Solution

The mass moved in **Case 3** because: **B. The Applied Force was greater than Static Friction.** **Explanation:** - **Static Friction vs. Applied Force:** Static friction is the force that resists the initiation of sliding motion between two surfaces. For an object to start moving, the applied force must overcome the maximum static friction. - **Case 3 Scenario:** In this case, the applied force exerted on the mass was **greater** than the static friction opposing it. When the applied force exceeds the static friction, the mass transitions from being stationary to moving. - **Other Options:** - *Static Friction was greater than the Applied Force:* This would prevent the mass from moving. - *Kinetic (Dynamic) Friction was greater than the Applied Force:* This would cause the mass to decelerate or prevent motion if it was already moving. - *Static Friction was equal to the Applied Force:* The mass would remain stationary as forces are balanced. Therefore, the movement occurs specifically because the **applied force surpasses the static friction**, initiating motion. **Answer:** The Applied Force was greater than Static Friction.

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Bonus Knowledge

In Case 3, the mass moved because the applied force exceeded the maximum limit of static friction. When a force is applied to an object at rest, static friction works to keep the object in place. However, when that applied force becomes greater than the static friction's capacity, the object begins to slide. This transition is an exciting moment in physics, showcasing how forces interact! Once the object starts moving, static friction is replaced by kinetic friction, which is usually lower. This means the force needed to keep the object in motion is much less than what it took to get it moving in the first place. This is why it's easier to slide that heavy box once you've pushed it a bit!

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