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Problems: 92
Lessons: 19
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nf-1warm-upGuided solutionUnstarted

Normal force is not always mg

Incline normal force

Problem

A 4.0 kg block rests on a frictionless 30° incline. Find the normal force.

Your setup or answer

Open a hint

Use the axis perpendicular to the incline. There is no perpendicular acceleration.

Common wrong turn

Using N = mg because the block is at rest.