Answer: Limiting friction.
- A Kinetic friction
- B Rolling friction
- C Limiting friction
- D Fluid friction
Correct answer: C. Limiting friction
Explanation: Limiting friction is the maximum value of static friction, reached at the instant the body is on the verge of sliding.
Free-body diagram of a block on an incline: weight (mg) resolves into mg sinθ along the slope and mg cosθ into the slope, balanced by the normal force N and friction f.
Concept context
Newton's three laws, friction, circular motion, and free body diagrams.