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OpenStudy (anonymous):
A woman exerts a horizontal force of 1 pounds on a box as she pushes it up a ramp that is 2 feet long and inclined at an angle of 30 degrees above the horizontal. Find the work done on the box in ft -lbs.
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OpenStudy (anonymous):
W = fs cos(theta)
OpenStudy (anonymous):
s?
OpenStudy (anonymous):
displacement?
OpenStudy (anonymous):
okay so force * displacement * cos(theta)?
OpenStudy (anonymous):
work done = force times distance the force parallel to the slope of the ramp 1 * cos 30 degrees work done = cos 30 * 2 ft lbs
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OpenStudy (anonymous):
yaa
OpenStudy (anonymous):
awesome...thanks for your help
OpenStudy (anonymous):
= 1.73 ft lbs
OpenStudy (anonymous):
yw
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