A 200 Kg Box Slides Down a 12

question 68

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 prevent it from sliding down 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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