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1. Hi guys, can someone please help me calculate the moment aboint point O. I know M=Fd but what is my force in this situation? Thanks.
2. Just give me a moment.
3. (Original post by Mystery.)
Just give me a moment.
I hope the pun was intentional and you're actually willing to help :'D
I hope the pun was intentional and you're actually willing to help :'D
It was and I honestly don't know how to work out the force in this situation. Sorry for no contribution at all.
Good luck.
5. do you need to do something about the vertical and horizontal components?
6. (Original post by Mystery.)
It was and I honestly don't know how to work out the force in this situation. Sorry for no contribution at all.
Good luck.
Damn thanks anyway!
7. (Original post by thefatone)
do you need to do something about the vertical and horizontal components?
Yes I have resolved the components but I'm not sure what to do next? :/
8. It's Force x Perpendicular Distance, so you need to, I'm guessing, form a triangle if that helps to get the distance from O to the line a action of the force.
9. (Original post by ホク水ね)
It's Force x Perpendicular Distance, so you need to, I'm guessing, form a triangle if that helps to get the distance from O to the line a action of the force.
I thought the distance is 4m as given?
I thought the distance is 4m as given?
No, you need to find the perpendicular distance to the 'line of action' of the force.

So, on your diagram I want you to get a ruler and place it on top of the force's line, and extend it out, then draw a line from O to the force's line, making them perpendicular.

This is the length that you want to find
11. 600cos40*4 +600sin40*2 (-ve NewtonMeters a its going clockwise(
12. (Original post by ホク水ね)
No, you need to find the perpendicular distance to the 'line of action' of the force.

So, on your diagram I want you to get a ruler and place it on top of the force's line, and extend it out, then draw a line from O to the force's line, making them perpendicular.

This is the length that you want to find
Sorry I don't quite understand where you want me to draw the line. Is it possible if you can draw on the diagram please?

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13. (Original post by cheeks01)
600cos40*4 +600sin40*2 (-ve NewtonMeters a its going clockwise(
I thought that at first too but it doesn't give the correct answer. It should be 2610Nm.

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I thought that at first too but it doesn't give the correct answer. It should be 2610Nm.

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Is your calculator in radian. I've just done it and I got 2609.8 so 2610Nm when rounded
15. (Original post by cheeks01)
Is your calculator in radian. I've just done it and I got 2609.8 so 2610Nm when rounded
You my friend are a life saver! Thank you so much. That was the problem, no wonder all my other calculations were coming out wrong yesterday.

Would it be possible to help me with another question please?

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