Gravity is a force that acts towards the centre of the Earth.
This means that, wherever you are in the world, "down" is always towards the ground - even though your "down" isn't the same direction as anybody else's.
The gravitational pull of the Earth is what gives objects weight.
Thus weight is a force - it's how hard the Earth is pulling on an object.
The Earth pulls on every kilogramme with a force of ten Newtons.
We say that the Earth's gravitational field strength (at ground level) is 10 Newtons per kilogramme (10 N/kg) (Actually, it's more like 9.81, but for GCSE we usually call it 10.)
In other words, an object with a mass of 1kg
has a weight of 10N.
Found at Darvill.clara.net
