Vectors: Work on Object Pushed Up an Incline

glitchyfizz

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Mar 19, 2020
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Here's the problem: Find the work done by a force of 14 Newtons at 36° pushing an object 16 meters up a ramp inclined at 8°.

My problems before this didn't include ramps and work, so I'm unsure on how I'm supposed to incorporate the 8° ramp.

What I've tried so far is using W=Force•displacement•costheta (14N•16mcos36° using information from the problem) and ended up with 181.22 J, but I haven't used the 8° at all so I'm sure that's wrong.
 

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Hello, and welcome to FMH! :)

What is the component of the exerted force that is parallel to the axis of motion?
 
Here's the problem: Find the work done by a force of 14 Newtons at 36° pushing an object 16 meters up a ramp inclined at 8°.

My problems before this didn't include ramps and work, so I'm unsure on how I'm supposed to incorporate the 8° ramp.

What I've tried so far is using W=Force•displacement•costheta (14N•16mcos36° using information from the problem) and ended up with 181.22 J, but I haven't used the 8° at all so I'm sure that's wrong.
Have you learned to draw a free-body-diagram?

That will help you answer the question posed in #2.

1584678986792.png
 
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