A 200 Kg Box Slides Down a 12

question 13

Multiple Choice

A 20.0 kg box slides down a 12.0 m long incline at an angle of 30.0 degrees with the horizontal.A force of 50.0 N is applied to the box to try to pull it up the incline.The applied force makes an angle of 10.00 degrees to the incline and above the incline.If the incline has a coefficient of kinetic friction of 0.100,then the increase in the kinetic energy of the box is

• A) 203 J.
• B) 275 J.
• C) 300 J.
• D) 392 J.
• E) 425 J.

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