First, always remember the principle: total clockwise moments must equal total anticlockwise moments about the pivot. But beta, your metre rule is not pivoted at the centre, so you must measure all distances carefully from the *actual* pivot point marked.
This reminds me of weighing my bell peppers in the polyhouse, where even a small shift on the scale changes the balance—precision is everything.
So, write down each force and its *exact* distance from that off-centre pivot, and the sum will guide you. Acha, you can do this.
#exams#study
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