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M2 Centre of Mass question



Unsure about how to go about this question - mainly because it's not a lamina, do you treat it any differently? I'm guessing the mass of the entire shape is 20 and not 22 because of this, but I have no idea how to find the CoM of the right angle triangle. I've looked at the mark scheme and it doesn't make any sense to me. Can anyone help? :redface:
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Notnek
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Original post by Protostar


Unsure about how to go about this question - mainly because it's not a lamina, do you treat it any differently? I'm guessing the mass of the entire shape is 20 and not 22 because of this, but I have no idea how to find the CoM of the right angle triangle. I've looked at the mark scheme and it doesn't make any sense to me. Can anyone help? :redface:

I’m on my phone so can’t explain properly - I’m replying because no one else has yet.

There are videos explaining how to deal with wire frameworks e.g. this one:

https://www.examsolutions.net/tutorials/centre-of-mass-wire-framework/

And if this is an Edexcel exam question then there may be an examsolutions video on this question.

I can help later if you still need it and no one else has replied.
Original post by Notnek
I’m on my phone so can’t explain properly - I’m replying because no one else has yet.

There are videos explaining how to deal with wire frameworks e.g. this one:

https://www.examsolutions.net/tutorials/centre-of-mass-wire-framework/

And if this is an Edexcel exam question then there may be an examsolutions video on this question.

I can help later if you still need it and no one else has replied.


Ahhh, this helped a lot - thank you! :biggrin:

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