Locking fuel cap fora 06 benz?
A gravitational force is literally a distortion of space caused by the presence of mass. The old rubber-sheet-analogy helps to understand this. Imagine a thin rubber sheet with a baseball resting on it. Around the baseball there will be a distortion of the sheet. Place a larger mass on the sheet, like a bowling ball, the distortion will be more pronounced. Now just substitute the rubber sheet for space. If you place something within that distortion on the sheet it will move towards the bowling ball. On the other hand, if you give some angular speed to the second thing it will move *around* the bowling ball in an orbit.
I must develop a pressure equal to the head of 21.1 m of water. Something around 30 psig.
