Question

a rod 200cm long is pivoted at the 80cm from the one end 3kg body is attched at the one end 80cm away from the pivoted point how far from the other end 5kg body be attched to the rod

Answer 1

So the rod is 200 cm long and pivot is at 80 so length 1 is 80 and length 2 is 120 cm.
So 3*80 = x*5 where x is the distance from the pivot. How far will that be from the 120 cm end?