Slanted Surfaces with Friction: a 250-Kg Crate Is on a Rough

question 133

Multiple Choice

Slanted surfaces with friction: A 250-kg crate is on a rough ramp, inclined at 30° above the horizontal. The coefficient of kinetic friction between the crate and ramp is 0.22. A horizontal force of 5000 N is applied to the crate, pushing it up the ramp. What is the acceleration of the crate?

• A) 8.4 m/s²
• B) 10 m/s²
• C) 12 m/s²
• D) 13 m/s²
• E) 3.4 m/s²

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