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Isaac Physics Moments help Watch

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    Hi can someone please show me how to do this question, Ive been trying to do it for hours. I’ve got to be missing something.

    There is a 100g mass sitting on the 10cm mark, and a 50gmass sitting on the 60cm mark. Force acts at the 30cm mark. I’m told that the centre of mass is at the 50cm mark and I need to find force F

    Thanks
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    The moment on the right must add to the moment on the left. And 30cm is the pivot so distances are measured from it. Does that help in any way?
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    Yeah sort of aha. So does t have two pivots because the question says there’s a pivot at 50cm
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    Oh I’ve managed to figure it out I was I assumed that it meant g when it actually meant grams and I forgot to consider gravity
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