The answer is a Scroll bar, the description fits perfectly because you need to move it to see more of the content you are viewing, and it wont be completely. when the item does appear completely on screen then the bar is relatively large and there is no need for scrolling, however the opposite occurs during when you cannot see all of it.
The correct answer is centrifugal force.
The force that pulls out from the center on a body that is in a circular motion is called centrifugal force. This force increases as the speed of motion increases. It is centrifugal force that results in a strong outward pull on your vehicle traveling around a corner.
