A Block Is at Rest on a Rough Inclined Plane $\mu$

question 92

Multiple Choice

A block is at rest on a rough inclined plane and is connected to an object with the same mass as shown. The rope may be considered massless; and the pulley may be considered frictionless. The coefficient of static friction between the block and the plane is μs; and the coefficient of kinetic friction is μk.

-If the mass of the suspended object is doubled, what will be the acceleration of the block up the plane?

• A)g(2 - \(\mu\)_k sin \(\theta\))
• B)2g(\(\mu\)_k sin \(\theta\) - cos \(\theta\))
• C)g(2tan \(\theta\) - \(\mu\)_k sin \(\theta\))
• D)g(2 - sin \(\theta\) - \(\mu\)_k cos \(\theta\))
• E)g(2cos \(\theta\) - \(\mu\)_k sin \(\theta\))

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