Gravity

The uphill journey is a pull; the motors must pull the weight uphill.

The downhill journey while of course being influenced by the pull of gravity is simply not enough by itself to power the entire thing.

There is no pushing involved.

Airplanes do not "defy gravity", any more than you do when you walk upstairs.

In both cases, an upward force is generated that is greater than the downward force

of gravity on an object. Since the net force on the object is then upward, the object

accelerates upward.

Yes, an equal arm balance is commonly used to measure mass by comparing the mass of an object to a set of known masses on the other side of the balance. When the two sides are equal, the mass of the object can be determined.

No. Mass is a property of the object and doesn't change, no matter where the object goes or what's happening to it. The force of gravity on the object is its "weight" and that can change. It depends on, for example, what planet the object is on.

When the air resistance on a falling object equals the pull of gravity, the object reaches its terminal velocity. At terminal velocity, the object no longer accelerates and falls at a constant speed due to the balance of forces acting upon it.

Gravity is most often described in units of acceleration, which is exactly the same thing

as force per unit mass.

On the surface of the Earth, that's 9.81 meters/second2 and 9.81 newtons/kilogram .

(Except in the US, where it's 32.2 feet/second2 and 32.2 pounds/slug .)

Also, while we're on the subject, gravity doesn't change in air, but acceleration does

because there are other forces besides gravity acting on an object falling in air.

No, temperature does not affect the force of gravity. Gravity is a fundamental force of nature that is determined by the mass and distance between objects, not by temperature. Temperature may affect the properties of objects or materials, but it does not influence the strength of gravity.

No, an object with mass will always experience the gravitational force, so it cannot be truly weightless when under the influence of gravity. Weight is the measure of the force of gravity acting on an object, so as long as gravity is present, the object will have weight.

No, friction is not a type of gravity. Gravity is the force that attracts two objects toward each other, while friction is the force that resists motion when two surfaces are in contact with each other. Both are separate physical phenomena with different causes and effects.

In order to beat level 12 on Gravity Grid, you need to strategically position the blocks to create a path for the ball to reach the end point. Pay attention to the orientation of the blocks and use trial and error to find the correct arrangement. Focus on utilizing the gravitational pull to guide the ball through the obstacles.

Mainly because those forces are so much much much much tinier than the gravitational

forces between the stone and the Earth.

But if you want to be technically precise about it, it's also because any other thing besides

the Earth creates a gravitational force on the stone that's not vertical, so it has even less

effect on the vertical acceleration than it might otherwise have, even with its pathetically

almost negligible mass.

Gravity does not have a 'charge'. It is, however, always attractive and never repulsive.

Changes in the color of a patient's urine can indicate changes in hydration levels, diet, or the presence of certain medical conditions. However, changes in color alone do not necessarily provide information about changes in specific gravity, which is a measure of urine concentration. Specific gravity depends on the amount of solutes in urine, not just its color.

Through acceleration.

Gravity and acceleration are equivalent: they're each associated with a force that's proportional to the mass of the object. Amusement parks take advantage of this in "virtual reality" theaters: they simulate acceleration with gravity, by rocking the seats backward or forward to simulate speeding up or slowing down. Artificial gravity in space is the converse: simulating gravity with acceleration.

Acceleration can be linear or centripetal.

Continuous linear acceleration requires continuous energy input. The kinetic energy is proportional to the velocity squared. It's prohibitively expensive and doesn't allow you to stay any place for very long -- including near-earth orbit.

Centripetal acceleration is acceleration toward a center point -- it changes the direction of motion but not the tangential speed. Everything that rotates experiences "artificial gravity." That's why curves in roads -- especially high-speed race tracks -- have to be banked. For an object spinning in space without friction, it takes energy to start and stop the rotation, but it doesn't take any energy to sustain a constant rotation. Conservation of momentum keeps the object spinning. Constant centripetal acceleration (through rotation) is much more sustainable than constant linear acceleration, and it also allows the spinning thing to remain in orbit around the Earth or Sun or other planet.

You can find an artificial-gravity calculator on-line at: http://www.artificial-gravity.com/sw/SpinCalc/

You can find more information at: http://www.artificial-gravity.com/

The gravity you feel is primarily affected by your distance from the center of a massive object, such as Earth. Gravity is weaker at higher altitudes and stronger closer to the surface due to the distribution of mass. Factors like the mass of the object and your own mass also play a role in determining the gravity you experience.

Yes. Gravity drops off at the square of the distance. So the further you are from something the less the force of gravity you experience.

The force of gravity is determined by (a) the masses involved, and (b) the distance between the masses. Of course, in the case of a planet for example, you can determine the mass if you know its average density and its size. Note that for a homogeneous sphere, the force of gravity on an object outside the planet is the same as if all mass were concentrated in the center.

It greatens your resistance to the pulling force of the Earth, with causes muscle cells to grow in size.

This is made evident by low gravity situations on spacecraft; the low resistance causes the people to lower in muscle mass, therefore constant exercise is needed to maintain ones' own body.

In order to do this, you must wear the Gravity Suit. While bein in the suit, in order for you to use it, you change gravity by simply tapping the screen. Do this 30 times, and you completed the acheivement.

Jupiter's surface gravity strength is about 24.79 m/s², which is 2.53 times the strength of Earth's surface gravity. This means that an object on Jupiter's surface would weigh 2.53 times more than it would on Earth.

The picture is fake sadly so Slender Man was not on Gravity Falls.

Jason Ritter voices dipper and a women named Kristen voices his sister Mabel. I don't know her last name