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1. I will post the picture in a minute
i)Show work
ii) 1600000Nm (2.s.f)
iii) 6830N, 3830N

I got the first two questions right, however, the third one is a problem.
I will post the picture in a minute
i)Show work
ii) 1600000Nm (2.s.f)
iii) 6830N, 3830N

I got the first two questions right, however, the third one is a problem.
Before the wind blew, the force caused by A was 5000 more than that caused by C. It now only needs to be 3000 more, so call the forces at C and A y and 3000+y. Work out the combined moments of A and C about Obefore the wind blows (I got 610000). The moments after the wind starts blowing must be the same. That gives you an equation for y.
4. (Original post by tiny hobbit)
Before the wind blew, the force caused by A was 5000 more than that caused by C. It now only needs to be 3000 more, so call the forces at C and A y and 3000+y. Work out the combined moments of A and C about Obefore the wind blows (I got 610000). The moments after the wind starts blowing must be the same. That gives you an equation for y.
Can you show me working please?
Can you show me working please?
I left B and D out of it since it said that those forces stayed the same.

Moment of A and C about O before the wind blows = 8000 x 50 + 3000 x 70.
That should have been part of your working in (ii).

Now repeat with 3000+y and y (the wind won't have any turning effect since it acts all the way along the side of the ship). The result must equal the same as above, i.e. 610000.

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