A metre rule is found to balance at the 46cm mark,when a body of Mass 60g is suspended at the 6cm mark, the balance point is found to be at the 30cm mark calculate the mass of the metre rule and the distance of the balance point from the zero end,if the body was moved to the 18cm mark

1 answer

let r = mass of rule

60 * (30 - 6) = r * (46 - 30) ... solve for r

let b = new balance point

60 * (b - 18) = r (46 - b) ... plug in r , then solve for b