Friction on Inclines
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Objective
I can predict the motion of an object on an inclined plane by analyzing the forces of gravity, friction, and the normal force.
Part 1 of 3
Warm-up video
Flipping Physics · 6:41
We don't generate video — this one is by Flipping Physics 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
Draw a free body diagram of a block resting on an inclined plane. Label all forces acting on the block.
Explain in your own words why the normal force is not always equal to the force of gravity. Give an example using an inclined plane.
Part 3 of 3
Exit ticket
Quick comprehension check
“A 2 kg block rests on an inclined plane. The angle of the incline is 20°, and the coefficient of static friction between the block and the plane is 0.3. Will the block slide down the incline? Show your calculations and explain your reasoning. (Assume g = 9.8 m/s²) A book is placed on an inclined plane. The angle of the incline is 10°. If the force of gravity parallel to the incline is 3 N, and the maximum force of static friction is 2.5 N, will the book slide? Show your calculations and explain your reasoning.”
Sample answer included in the free materials
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