Alarge cube (mass = 25 kg) being accelerated across a horizontal frictionless surface by a horizontal force . a small cube mass = 4.0 kg) is in contact with the front surface of the large cube and will slide downward unless is sufficiently large. the coefficient of static friction between the cubes is 0.71. what is the smallest magnitude that can have in order to keep the small cube from sliding downward?

F=400.28 N

Explanation:

Given

mass of large cube

mass of small cube

coefficient of static friction

acceleration a of the system is given by

Now Normal reaction between two blocks is given by

friction tries to balance weight

thus

and

i wanna say it’s between b and d, leaning more towards b.

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