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1. This question's wording is very confusing.

"... Acting in the vertical plane containing the line of greatest slops of the inclined plane through the particle."

Ehh?
Can someone explain this better?

Very much appreciated!
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2. (Original post by nwmyname)
This question's wording is very confusing.

"... Acting in the vertical plane containing the line of greatest slops of the inclined plane through the particle."

Ehh?
Can someone explain this better?

Very much appreciated!
basically just means it acts completely to the right when you draw it on 2d paper (assuming to draw your diagrams with the 35 incline on the left. Like shown below.

this sentence is included because, for example, you could have a horizontal which acts straight out of the page or straight into the page. Its still horizontal however it wouldnt be in the vertical plane containing the line of greatest slope.

Basically when they say things like that just draw them how you would usually draw them on 2d paper
3. (Original post by DylanJ42)
basically just means it acts completely to the right when you draw it on 2d paper (assuming to draw your diagrams with the 35 incline on the left. Like shown below.

this sentence is included because, for example, you could have a horizontal which acts straight out of the page or straight into the page. Its still horizontal however it wouldnt be in the vertical plane containing the line of greatest slope.

Basically when they say things like that just draw them how you would usually draw them on 2d paper
Makes much better sense! Thanks.

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