Inclined Planes and Friction
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Objective
I can predict the motion of an object on an inclined plane by analyzing the forces acting on it, including friction, using free-body diagrams.
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 for a block at rest on an inclined plane, including the force of gravity, the normal force, and the force of static friction. Label each force.
Explain why the normal force is not always equal to the force of gravity. Under what conditions *is* the normal force equal to the force of gravity?
Part 3 of 3
Exit ticket
Quick comprehension check
“A block begins to slide down an inclined plane when the angle of inclination is 25°. Calculate the coefficient of static friction between the block and the inclined plane. Show your work. An object is placed on an inclined plane. It is observed that the object starts to slide when the angle of the incline reaches 30°. Determine the coefficient of static friction between the object and the inclined plane. Show your work.”
Sample answer included in the free materials
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