A2L Item 279

• Description:
• Goal:
• Source:
• Keywords: Acceleration, Forces, Friction, Gravity, Tension

---

The question for students:

An applied force F_A pushes a block of mass m up a rough incline having coefficient of kinetic friction μ_k. The friction force on the block is

1. mgcosθ
2. mgsinθ
3. μ_kmgsinθ
4. μ_kmgcosθ
5. μ_kmgtanθ
6. μ_kmgsinθcosθ
7. None of the above.
8. Can’t be determined.

---

Commentary for teachers:

No commentary available.

---