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is always equal and opposite to the appl...

_____is always equal and opposite to the applied force

A

Rolling friction

B

Static friction

C

Sliding friction

D

Fluid friction

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, "_____ is always equal and opposite to the applied force," we need to identify the type of friction that fits this description. ### Step-by-Step Solution: 1. **Understanding Friction Types**: - There are different types of friction: static friction, sliding (kinetic) friction, rolling friction, and fluid friction. Each type acts under different conditions. 2. **Identifying Static Friction**: - Static friction is the frictional force that acts on an object that is at rest. It prevents the object from starting to move when a force is applied. 3. **Behavior of Static Friction**: - When a force is applied to an object at rest, static friction will increase to match the applied force, up to a certain limit known as the limiting friction. This means that static friction will always adjust itself to be equal and opposite to the applied force, as long as the object remains stationary. 4. **Limiting Friction**: - If the applied force exceeds the maximum static friction (limiting friction), the object will start to move, and static friction will no longer act. Instead, kinetic (sliding) friction will take over, which has a constant value and does not change with the applied force. 5. **Conclusion**: - Therefore, the correct answer to the question is **static friction**, as it is the type of friction that is always equal and opposite to the applied force while the object remains at rest. ### Final Answer: **Static friction**
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