Question

a boy was 30 kg sitting at the distance of 2 metre from a middle of a see-saw.where should a boy of 40 kg sit to balance the see-saw​

Answer 1

Explanation:

m1.x1=m2.x2

let

m1 =30kg

x1=2m

m2=40kg

x2=?

30×2=40×x2

x2 =1.5m