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M2 ial 24 january 2014

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1. https://ca99c64778b62ba7e7b339967029...%20Edexcel.pdf

How do i deal with moment about D at Q5a?

Isn't that a weird position? I couldn't understand even I had a look on mark scheme. I get F x (2a) but not mgsin(theta)a

Many thanks.
2. (Original post by Kamisama)
https://ca99c64778b62ba7e7b339967029...%20Edexcel.pdf

How do i deal with moment about D at Q5a?

Isn't that a weird position? I couldn't understand even I had a look on mark scheme. I get F x (2a) but not mgsin(theta)a

Many thanks.
You need the moment of weight=moment of reaction.
draw them on the diagram extend the line of weight and find perp distance to D.

Posted from TSR Mobile
3. (Original post by physicsmaths)
You need the moment of weight=moment of reaction.
draw them on the diagram extend the line of weight and find perp distance to D.

Posted from TSR Mobile
https://scontent.flcy1-1.fna.fbcdn.n...09&oe=575252BD

here's what i drew , but i still dont get itignore the R=mgcos(theta) thing
4. (Original post by Kamisama)
https://scontent.flcy1-1.fna.fbcdn.n...09&oe=575252BD

here's what i drew , but i still dont get itignore the R=mgcos(theta) thing
Here's my diagram:

Forces in red.
Lines of action of forces in green.
Perpendicular distance of lines of action in blue.

Edit: For some reason I can't get rid of one of the images.

Attached Images

5. (Original post by ghostwalker)
Here's my diagram:

Forces in red.
Lines of action of forces in green.
Perpendicular distance of lines of action in blue.

Edit: For some reason I can't get rid of one of the images.

That's much clearer, thank you so much.
6. (Original post by Kamisama)
That's much clearer, thank you so much.
You're welcome.

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