All 13 Uses of
grave
in
Amusement Park Physics
- The first rides at these parks were carousels, but in 1884, the first gravity switchback train was introduced.†
Chpt 1
- Most people know Sir Isaac Newton for his discovery of gravity, which is thought to have been triggered when he watched an apple drop from a tree.†
Chpt 4
- A freely falling body is an object that is moving under the influence of gravity only.†
Chpt 5
- After a brief period in which the riders are suspended in the air, the car suddenly drops and begins to accelerate toward the ground under the influence of the earth's gravity.†
Chpt 5
- When the cup is at rest, the force of gravity pulls downward upon the water.†
Chpt 5 *
- At the location of the holes, there is nothing to balance gravity's force and prevent water from spilling out of the cup.†
Chpt 5
- However, when the cup is in free fall, the water will not leak, making it seem as though the water is not experiencing the downward pull of gravity.†
Chpt 5
- This feeling of weightlessness (the sensation that you are not experiencing the downward pull of gravity) is also experienced by riders on free-fall rides.†
Chpt 5
- But, in fact, they do have weight and are being acted upon by the force of gravity.†
Chpt 5
- Feelings of weightlessness are not due to a decrease in forces of gravitation; people do not feel forces of gravity.†
Chpt 6
- What you feel is the force of a seat (or other external object) pushing on your body with a force to counteract gravity's downward pull.†
Chpt 6
- The seat must supply the centripetal force, pushing upwards on the rider with a force greater than gravity's downward pull.†
Chpt 6
- For this reason, we would say the rider experiences 2 g's of force (a seat force that is 2 times the gravity force).†
Chpt 6
Definition:
-
(grave as in: Her manner was grave.) serious and/or solemnThe exact meaning of this sense of grave can depend upon its context. For example:
- "This is a grave problem," or "a situation of the utmost gravity." -- important, dangerous, or causing worry
- "She was in a grave mood upon returning from the funeral." -- sad or solemn
- "She looked me in the eye and gravely promised." -- in a sincere and serious manner