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# A rectangular block of mass 10 kg rests on the slope of a triangular- shaped block of mass 30 kg. The surface of the triangle is at an angle of 30...

3. A rectangular block of mass 10 kg rests on the slope of a triangular- shaped block of mass 30 kg. The surface of the triangle is at an angle of 30◦ from the horizontal. If all the surfaces are frictionless what horizontal force must be applied to the triangular block in order to keep the 10 kg mass from sliding down the surface of the 30 kg block?

4. A rectangular block of mass 5 kg slides down a 45◦ slope at a constant velocity of 3 m/s. What is the coefficient of kinetic friction between the block and the surface of the slope?

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http://www.coursehero.com/qa/expert/expert_profile.php?expert_id=3857 A rectangular block of mass 10 kg rests on the slope of a triangular- shaped block of mass 30 kg. The
surface of the triangle...

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