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joe465
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Homework Statement
After a period of time the frame contains four crates.
Calculate the distance of the centre of gravity from the support A.
Homework Equations
The weight is 200KG per crate
The Attempt at a Solution
I know how to calculate the centre of gravity but this problem is stupid. There is an image attached to aid in understanding. It said on the previous question that the frame was 14m long. The first crate doesn't appear to begin at the start and looks as though it ends at 2m, so how far is it? Would i have to take this distance into consideration or should i just calculate the centre of gravity between the first 2 boxes and then add 2m to the final answer since it wants the distance from A. SHould i class the crates as being to the end of each arrow so it would make the first two boxes 2m apart and the last one 5m from the previous one?
I worked out the COG between first 2 was 0.67m to the right of the first one.
Then Since i worked out 0.67m i add that onto the 5m distance between the second and last one.
I worked out the overall centre of gravity being 1.4175m which i gather is from the end of the first boxes.
Add 2m since the distance to the first box is two to give 3.4175m from A.
Is this correct?
Thanks, in advanced
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