A 100-Kg Mass Is Placed on a 25 $\degree$ Incline and Friction Keeps It from Sliding

question 71

Multiple Choice

A 10.0-kg mass is placed on a 25.0 $\degree$ incline and friction keeps it from sliding.The coefficient of static friction in this case is 0.580 and the coefficient of sliding friction is 0.520.The mass is given a shove causing it to slide down the incline.Taking down the incline as positive,what is the acceleration of the mass while it is sliding?

• A)0.477 m/s²
• B)-0.477 m/s²
• C)1.99 m/s²
• D)-1.99 m/s²

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