Friction on Inclines

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Objective

I can calculate the force of friction acting on an object on an inclined plane using the coefficient of friction and the normal force.

Part 1 of 3

Warm-up video

Unknown Channel · 5:00

We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

Part 2 of 3

Practice

7 questions

1

Define the term "coefficient of friction" and explain its role in determining the force of friction between two surfaces.

2

Explain why the normal force on an object on an inclined plane is not equal to the object's weight (mg), but rather to mg cos θ.

Part 3 of 3

Exit ticket

Quick comprehension check

A 4 kg box is on a ramp inclined at 30°. The coefficient of kinetic friction between the box and the ramp is 0.25. Calculate the force of kinetic friction acting on the box. (Use g = 9.8 m/s²) A block of wood with a mass of 2 kg is sliding down a plane inclined at 45°. If the coefficient of kinetic friction is 0.3, what is the force of kinetic friction acting on the block? (Use g = 9.8 m/s²)

Sample answer included in the free materials

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