A Block of Mass M Is Sliding Down a Rough $\theta$

question 61

Multiple Choice

A block of mass M is sliding down a rough inclined surface that makes an angle $\theta$ with respect to the horizontal.If the coefficient of static friction is $\mu$ _s and kinetic friction $\mu$ _k,then the acceleration of the block down the incline is equal to:

• A)gsin \(\theta\) - g \(\mu\)_s \(\times\) cos \(\theta\)
• B)gcos\(\theta\) - g \(\mu\)_k \(\times\) cos \(\theta\)
• C)g \(\mu\)_s \(\times\) cos \(\theta\) - gsin \(\theta\)
• D)gsin \(\theta\) - g \(\mu\)_k \(\times\) cos \(\theta\)
• E)gsin \(\theta\) - g \(\mu\)_s \(\times\) cos \(\theta\) - g \(\mu\)_k \(\times\) cos \(\theta\)

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