This is the 13731st most frequent Turkish word.
kütleleri
"Masses" (plural of "mass").
In this sentence, 'kütleleri' refers to 'masses'. The word is used in a scientific context, indicating the amount of matter in an object.
Kütleleri arttıkça nesnelerin çekim kuvveti de artar.
As the masses increase, the gravitational force of objects also increases.
Here, 'kütleleri' refers to 'groups of people'. The word metaphorically implies a large assembly or crowd.
Konser alanında kütleleri bir araya toplamak zordu.
It was difficult to gather the masses together in the concert area.
In this instance, 'kütleleri' is again 'masses', used concretely in the context of physical measurements or scientific studies.