Can anyone list a few observations about gravity???

Question

Thanks!

Scientific answers please!!! It's for hw!!!

Answer 1

It makes apples fall--

Answer 2

OBS 1--Gravity is really, really weak. If you jump off a twenty story building, gravity will pull you downward, but you will not go through that sidewalk...you will splat all over the sidewalk. Why? Because the electro-magnetic forces surrounding the atoms in that sidewalk are way stronger than the gravity pulling you down.

OBS 2--Gravity is all over the place. No matter where you go on Earth, your bathroom scale will show you are still overweight (or not) because graivty is everywhere on Earth. If you were to go out into space, you would still weigh something while standing still. It's only when you move in certain ways that other forces can cancel out gravity effects in space and leave you weightless. (By the way, you don't have to be in space to be weightless. I used to do it frequently in the aircaft I flew.)

OBS 3--The force of gravity always pulls downward. Jumping off the bottom rung of a stepladder will show you that...you won't float off sideways or upward on one or more of those jumps. You'll always head downward. So gravity pulls downward everywhere, where downward means toward the big mass (like Earth or the Moon if you happen to be standing there) that's pulling you through gravity towards it.

OBS 4--Gravity can make things go or stop. Put a ball on a hill and let the ball go. It wll start to roll downhill. Gravity is pulling that ball downward at an ever increasing rate of speed called acceleration. Now take another ball and push it with your hand to roll it uphill (against the direction gravity is pulling). The ball will slow (deccelerate) and eventually stop because of that downward pull by gravity. If the hill is steep enough, after that ball stops, it will start back down the hill again because gravity still tugs at it...downward of course.

Well, there are four observations you can make right away. There are a lot more, but a lot of them require sophisticated and expensive tools. And a lot of them require a degree in physics to use those tools and understand what you are observing.

Answer 3

Personal observations? When something is thrown up into the air, gravity always wins. All objects fall at the same rate when air resistance is not a factor. Wet logs are much heavier than dry logs.
Scientific observations? Gravitational attraction is inversly proportional to the distance between the objects. Although it is suspected, no one has ever detected gravitational waves. Einstein blames it on warped and deformed space. It is greater at the poles than at the equator. The extent of a gravitational field has the effect of slowing time. Accelleration effects are exactly the same as gravitational effects.

Answer 4

a gravitational force exists between two masses. Noticible when on mass is enormous. A gravitational force exists between the the moon and the earth hence the moon orbits the earth because its mass is smaller than the earths.

on ground level your potential energy is zero. potential energy (P.E) = mgh (where m is the mass of the object, g is acceleration due to gravity and h is the height of the object from the earths surface)

As the object falls this P.E will be converted to K.E. (Kinetic Energy) [K.E. = 1/2mv^2]

When an object falls freely it wall fall at the rate of g (acceleration due to gravity which is equal to 10ms^-2 or 9.81ms^-2 if your a Higher Secondary Student)

If you want to know some advanced physics theories on Gravity research Pi-ons. This information will be very useful for Higher Secondary and College students.

Answer 5

Gravity is the weakest of the four forces by far, being billions of times weaker than electromagnetism. Simply defined, it is the attraction that every particle in the universe has for every other particle in the universe. Matter creates a "dimple" in the space-time continuum which affects other matter around it, much like placing a baseball in the middle of a trampoline. The moon, for instance, is in the earth's "dimple" and therefore follows us around the sun, alternately overtaking and then falling behind us. The earth is in the considerably larger dimple created by the sun which in turn is in the dimple created by the billions of stars in the Milky Way galaxy.

Answer 6

Things don't fall up.

The larger the object the greater the gravitational pull.

The effect of gravity becomes less the further away you are from the earth. ie. Astronauts float on their trip to the moon.

The moon has less gravitational pull than the earth.

Answer 7

Bowling balls dropped on a foot, aided by gravity, hurts like heck.

Answer 8

It seems to intensify with age.

Answer 9

It wreaks havoc on women's boobs!

Answer 10

it sucks