gravitational potential energy

• gravity - force of attraction between two objects
• gravity depends on the mass of an object and the distance netween the two
• gravitational field - field of influence around the earth acting inwards
• whenever an object comes into the gravitational field it experiences a force of attraction (weight )
• weight = mass x gravitational field strength
• weight - force acting in the gravitational field
• mass - intrinsic property
• E = mass x gravitational field strength x height