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Toppling Formula

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Moderator note: Thread moved from technical forum so formatting template is missing

Hi, I have a block with a specified weight and a lever with a force at the other end. I was hoping someone could tell me what formula i need to work out the maximum length of lever before the block falls over.
 

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BvU

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Hi there. This homework ?
And: how come you don't worry about the height of the block ?
 
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Thanks for your response.

Yes. Sorry, the height of the block is 1100mm.
 

BvU

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Thank you for the response to the second question. Now how about the first one ?
 
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Yes, it is for a project.
 

BvU

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Fair enough. Around what point (axis) will it rotate when it topples ?
Where does gravity act ?
Just before it topples, what is the equilibrium condition ?
 
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The CoG of the block is in the centre of the block, and I assume the block will topple at the bottom right point?

I am unsure what formula to use to work out the equilibrium and toppling?
 

BvU

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Isn't the aim of the project to find that out ?
 
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No, this is additional work I wanted to include but needed some guidance on what formula to use. No worries if you can't assist, its not essential work.
 

BvU

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Hmm... what's the non-additional work, then ?
When is a balance with unequal arms in equilibrium ? (do you see the similarity with your case ?)
 

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