The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F = 0.550mg is then applied at upward angle ? = 24°.

(a) What is the magnitude of the acceleration of the block across the floor if the friction coefficients are ?_s = 0.610 and ?_k = 0.505?

(b) What is the magnitude of the acceleration of the block across the floor if the friction coefficients are ?_s = 0.395 and ?_k = 0.295?

What is the vertical component and horizontal component of the applied force? What is the gravitational force? What is the vertical acceleration? From Newton's second law for vertical motion, what is the normal force? What is fs,max? How does that value compare with the horizontal component of the applied force?

Transcribed Image Text:

-x Zo 10 F -x Zo 10 F

Answer rating: 100% (QA)

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