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Q: Why doesn't the gravity on a picture on a shelf pull it down?
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Why doesn't the gravity on a picture on a shelf pull it downward?

Actually the gravity on a picture on a shelf does pull it downward. If the gravity did not act on the picture, it would float away. The reason the picture doesn't go down through the shelf can be explained by Newton's Third Law. Every action has an equal but opposite reaction. The force of the picture on the shelf due to gravity is the same force of the shelf on the picture. Since both forces are the same, the picture remains stationary on the shelf.


When you jump why does gravity pull you back down?

gravity is a constant force pulling down on you. jumping doesnt escape that fact.


Gravity pulls down on picture that is hanging from a nail. why doesn't the motion of the picture change?

The motion of a picture does not change when the force of gravity pulls it down because the motion of the picture is more or less static.


Gravity pulls down on a picture that is hanging from the nail Why doesn't the motion of the picture change?

I don't now


Is there a possibility that gravity doesnt exist?

No. Gravity exists. You have proof of this fact by the way you are held down when you walk instead of floating around.


Why doesnt the moon have enough gravity on it to pull us down?

It does. Astronauts on the moon can jump higher than they do on Earth but they still come back down. The moon's gravity is weaker than Earth's because the moon has less mass.


Why does the narrator take down her guardian angel picture in gravity?

As an act of rebellion to her parents


Why do objects weigh less on mars than they do on earth?

because there is no gravity on mars and it doesnt pull down on the object to make it heavier


Why does friction and gravity act on a soccer ball?

That question doesnt exactly make sense, but if you meant HOW does friction and gravity AFFECT a soccer ball, the friction of the grass and ball affects the speed, and the gravity pushes the ball down to the ground. Hope it helped! -Cara


Why do you fote on the moon?

One does not necessarily float on the moon, rather experiences less gravity which in turn doesnt pull you down at the same speed as persay on the earth


How do you send more than one picture at a time with facebook email?

im not really familiar with facebook email, but the best thing to do when sending multiple pictures is clikc on one picture and hold down the ctrl key while clicking on other pictures, if that doesnt work so well you could also click on a picture and roam to another picture and hold down the shift key.


Give an example of gravitational potential energy?

a book sitting up on a shelf. gravity can potentionally pull it down if pushed.