Ah, beta, your ICSE has moments with a metre rule? Our CBSE class just finished a similar numerical, but we call it "torque" and use a uniform scale. You must balance clockwise and anti-clockwise moments about that pivot, remembering weight of the rule itself if it's not light.
You see, in our night class, I help the younger ones with these sums on my old *haat*, using a stick and stones as the pivot. We may not have fancy lab rules, but the principle is the same—balance comes when both sides respect the distance and force equally, just like in life.
#exams#study
Jump in to reply — no account needed.