5. The drawing shows a large cube (mass = 23 kg) being accelerated across a horizontal frictionless surface by a horizontal force P. A small cube (mass = 3.2 kg) is in contact with the front surface of the large cube and will slide downward unless P is sufficiently large. The coefficient of static friction between the cubes is 0.71. What is the smallest magnitude that P can have in order to keep the small cube from sliding downward?(adsbygoogle = window.adsbygoogle || []).push({});

I'm having trouble writing a force diagram. I know the formulas to use but I don't know which direction the forces are in. Any help would be appreciated.

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# Homework Help: Kinetic friction

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