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OpenStudy (anonymous):
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?
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OpenStudy (anonymous):
this should be easy but for some reason I'm not getting the answer.
OpenStudy (anonymous):
|dw:1349725305056:dw|
OpenStudy (anonymous):
angles should all be 30 degrees not 40
OpenStudy (anonymous):
does it make sense?
OpenStudy (anonymous):
Not really, why would you subtract 5000sin(30) from the sum of the forces in the y direction and not add instead?
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OpenStudy (anonymous):
because it's pointing down
OpenStudy (anonymous):
|dw:1349726226391:dw|
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