Assalamu alaikum wa rehmatullahi wa barakatuh
Every body on the Earth is attracted towards it by a force known as gravitational force.
The direction of the gravitational force is towards the Earth.
Weight is nothing except the gravitational pull on a body.
Now see this verse.
O ye who believe! what is the matter with you, that, when ye are asked to go forth in the cause of Allah, ye cling heavily (weigh) to the earth? Do ye prefer the life of this world to the Hereafter? But little is the comfort of this life, as compared with the Hereafter.(Surah Taubah 38)
The word used is thaqaltum,and its root word is thaqal which means weight.
See the verse again,
…. the reason that you weigh (the phenomena) towards(this phenomena has a direction) the Earth (the correct direction)…!!!
The truth is from your Lord, so never be among the doubters.(Surah baqarah 147)