Part A

$($Eigure $1)$ shows a block of mass $m$ resting on a $20$ slope. The block has coefficients of triction ${}_s=0\mathrm{.}80$ and ${}_k=0\mathrm{.}55$ with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass $2\mathrm{.}0$ kg $.$

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Vector Components

Figure $1$ of $1$

What is the minimum mass $m$ that will stick and not slip?

Express your answer with the appropriate units.

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Part B

If this minimum mass is nudged ever so slightly, it will start being pulled up the incline. What acceleration will it have?

Express your answer with the appropriate units.

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$a=$

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