Define a short lever arm. On the larger shoulder there is a weight of 2 kg, on the smaller one

Define a short lever arm. On the larger shoulder there is a weight of 2 kg, on the smaller one, a weight of 10 kg. Larger shoulder length 50 cm.

Let’s calculate using the formula:
l1 * m1 = l2 * m2
where m1,2 are the masses of loads suspended from the lever,
l1,2 – shoulders
from it we get the formula:
l1 = l2 * m2 / m1
Let’s calculate
l1 = 0.5 * 2/10 = 0.1 m
Answer. 0.1 m