It is gravity.
It is obviously a Gravitational force of attraction present between earth and object.
The object's weight.
gravitational force
Gravitational force.
-- the mass of the object -- the distance between the object and the earth's center (or the object's height off the surface)
That's the object's "weight".
gravity
gravity
The objects weight is a measure of that force.
The objects weight is a measure of that force.
The object has mass, and the force of gravity gives that object weight, which is mass in a gravimetric field.
a scaleA scale is used to measure the force of gravity on an object. A balance is used to measure mass.