A 17-Kg Mass Is Placed on a 28° Incline and Friction

question 90

Multiple Choice

A 17-kg mass is placed on a 28° incline and friction keeps it from sliding.The coefficient of static friction in this case is 0.565 and the coefficient of sliding friction is 0.515.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) -0.14 m/s²
• B) 0.14 m/s²
• C) -0.29 m/s²
• D) 0.29 m/s²
• E) ​15.01 m/s²

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