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# Where have I gone wrong? moment M1 watch

1. So I labelled the diagram as shown below:
To find m: 2009=100g + 25g +mg
m= 80
Took the moment about A: 100g(2) + 25g(x) + 80g (14) = 2009 (8)
1320 + 25g(x) = 16072
25g(x)= 14752
x= 60.21.. so I checked the markscheme and my answer's wrong :/
but where have I gone wrong?

So I labelled the diagram as shown below:
To find m: 2009=100g + 25g +mg
m= 80
Took the moment about A: 100g(2) + 25g(x) + 80g (14) = 2009 (8)
1320 + 25g(x) = 16072
25g(x)= 14752
x= 60.21.. so I checked the markscheme and my answer's wrong :/
but where have I gone wrong?
Where did you get the 1320 from? It's incorrrect.

Method itself looks fine.
3. (Original post by ghostwalker)
Where did you get the 1320 from? It's incorrrect.

Method itself looks fine.
Ojay just rechecked it I got 12.8 thanks

So I labelled the diagram as shown below:
To find m: 2009=100g + 25g +mg
m= 80
Took the moment about A: 100g(2) + 25g(x) + 80g (14) = 2009 (8)
1320 + 25g(x) = 16072
25g(x)= 14752
x= 60.21.. so I checked the markscheme and my answer's wrong :/
but where have I gone wrong?
(100x9.8x2)+(80x9.8x14)+25gx=1607 2
1960 + 10976 + 25gx =16072
12936 + 25gx = 16072
25gx = 3136
x=12.8

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Updated: June 6, 2016
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