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Gravity
One of the four fundamental interactions, gravity is responsible for the fact that any objects with mass attract one another. According to general relativity, it is a space time curvature, but according to quantum mechanics it is the result of exchanges of virtual gravitons.
4,784 Questions
Titles for investigatory project in physics?
The best title for your project is one that encapsulates what your project is about. It should be short, but still memorable. A good title sets the tone for an entire project, so be sure to spend some good time on coming up with a title.
Earths magnetic field is not the cause of gravity?
No. Those are two quite different forces. The Earth's gravity is caused by the amount of mass Earth has.
No. Those are two quite different forces. The Earth's gravity is caused by the amount of mass Earth has.
No. Those are two quite different forces. The Earth's gravity is caused by the amount of mass Earth has.
No. Those are two quite different forces. The Earth's gravity is caused by the amount of mass Earth has.
How does gravity affect the bounce of a basketball?
Gravity affects the bounce of a basketball because if there is gravity, the basketball will come back down after it bounces. But if there is no gravity, the basketball will bounce and travel indefinitely upwards and never come back down until a gravitational force pulls the basketball towards it.
As a fraction, it can reduce to 14/3, which is 4 2/3 as a mixed number. This is the same value as 4.66....
Yes, gravity still exists in water. Gravity is the force that pulls all objects toward the center of the Earth, regardless of the medium they are in. So, objects in water still experience the gravitational force pulling them down.
How does gravity is force that acts over a distance?
OK, if the mass is small and close to the surface of the Earth, then the force of gravity is a constant downward. Two more similar sized objects show a (1/distance) squared relationship that is proportional to each mass.
What is the constant for gravity?
The constant acceleration due to gravity on EARTH is -9.81 m/s^2. This constant does not apply to objects on other planets because the mass of another planet might not be the same as Earth's mass. Because acceleration due to gravity is constant, this will be the acceleration due to gravity no matter the position of the object on Earth.
What is the gravitational formula for telling attraction?
The attraction between two objects is: G x m1 x m2 / distance squared
where m1 and m2 are the two masses involved, and G is the gravitational constant - approximately 6.674 x 10 to the power -11, in SI units.
What of an object changes when the pull of gravity changes?
Prior to Einstein, Newton's theory did a great job explaining many of the effects of gravity. Newton's theory, however, didn't offer any explanation of what gravity actually is. Einstein's theory offers some understanding of what gravity is. According to him, an object's mass warps space-time in certain ways, and the pull is an object's reaction to this warp. Newton's equations do not exclude the possibility of instantaneous extension of the gravitational field; Relativity accounts for the impossibility of instantaneous extension of the gravitational field.
When an object is still the forces on the object are?
There is Inertia with newtons law that an object in motion stays in motion. There is gravity holding it down.
If the object is at rest, there is no force acting upon it. Force = mass x acceleration (F=ma). Inertia is not a Force, and the net gravitional Force is zero because the downward acceleration is balanced by the upward push of the matter it rests upon. If there is no acceleration, there is no Force.
yes. gravity is the force of one object attracting another
What are the factors that make slopes more susceptible to the pull of gravity?
Factors that make slopes more susceptible to gravity include steepness of the slope, presence of loose or erodible material, amount of rainfall or water flow, and vegetation cover. Steeper slopes with less vegetation and more loose material are more likely to experience gravity-driven processes like landslides or erosion.
Why cant you use pencil in zero gravity?
I think you mean a pen. A pen isn't able to be used in zero gravity because the ink needs to move to the ballpoint where the ink exits. Thus, pens need the ink to flow to the tip of the pen so it comes out the ball roller, which without gravity won't work as well.
What is the center of gravity of pencil?
The ease with which an object can be balanced depends greatly on the location of its center of gravity. In this video segment adapted from ZOOM, two cast members experiment with various designs in an effort to balance a pencil on its tip. Their solution lowers the pencil's center of gravity, making this seemingly difficult balancing feat all but effortless.
No. Magnetism and gravity are quite different forces. For starters, gravity acts on all masses, and the amount of force depends only on the masses and the distance - and it is always attractive. The magnetic force depends on the material, and it can be both attractive and repulsive, depending on the orientation.
No. Magnetism and gravity are quite different forces. For starters, gravity acts on all masses, and the amount of force depends only on the masses and the distance - and it is always attractive. The magnetic force depends on the material, and it can be both attractive and repulsive, depending on the orientation.
No. Magnetism and gravity are quite different forces. For starters, gravity acts on all masses, and the amount of force depends only on the masses and the distance - and it is always attractive. The magnetic force depends on the material, and it can be both attractive and repulsive, depending on the orientation.
No. Magnetism and gravity are quite different forces. For starters, gravity acts on all masses, and the amount of force depends only on the masses and the distance - and it is always attractive. The magnetic force depends on the material, and it can be both attractive and repulsive, depending on the orientation.
Is gravity on earth greater or less then gravity on Venus?
The gravity present on a planet is usually denoted by the acceleration an object would experience due to gravity on that planet's surface. If we stick to Newtonian gravity (which should be adequate for our present purpose) the acceleration due to gravity on a planet is given by:
a = G*M / R^2
Where G is Newton's gravitational constant, M is the mass of the planet, and R is its radius (remember we are standing on the surface).
(Note: Here I have neglected the vector qualities of acceleration, this will not matter at present, the acceleration will be pointing down, towards the center of the planet.)
From this formula we can see that the acceleration increases if the mass of the planet increases. This is to be expected; gravity (in Newtonian gravity) is caused by mass, and thus a bigger mass means a stronger gravitational field. Since Venus is less massive than Earth we might expect the surface gravity on Venus to be less than on Earth.
However, we also have the R^2 in the denominator. This means the surface gravity on a planet will increase if the radius decreases (and the mass stays the same). This is also clear; if the radius is less then you stand deeper into the gravitational field. Venus is about the same size as Earth so this effect should not play as much a role as the difference in mass does.
Thus, just by using these arguments we can already conclude that the surface gravity on Earth is larger than the surface gravity on Venus.
Let us now look at some numbers. Earth's surface gravity is about 9.81 m/s^2 (it varies slightly from location to location). And Venus' surface gravity is 8.87 m/s^2, which is less, as expected.
This means that if you weigh 70 kg on Earth you will weigh 70*(8.87/9.81) = ~63 kg on Venus.
The equation F = ma relates to Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. This law highlights the relationship between force, mass, and acceleration in a system.
In Which direction does force of gravity work?
In both directions along the line between the centers of the two masses
that are being drawn together by gravity.
What is mudflow caused by wind or gravity?
Landslides are a common occurrence in the United States, especially during extreme weather conditions. Other causes of landslides include fire, volcanic eruptions, earthquakes, and even human interference. If the landslide is accompanied by mud or debris, this can be even more devastating to property, livestock, and even human life. If you have been a victim of mud slide and debris flow, it is advisable to contact experts in flood damage remediation in St. Augustine at (866) 599-0871.
Is acceleration due to gravity constant?
Yes, but you don't experience it around here.
The part of acceleration that's due to gravity is constant, but anything that falls
through air experiences an increasing air-resistance force as it falls faster, and
it eventually stops accelerating, at a speed called its "terminal velocity".
If you rig up a situation where there's no air, and you can witness the pure effects
of gravity, then things really get interesting ... like a bowling ball and a feather both
falling together and hitting the bottom at the same time. Many museums have exhibits
like that set up, with a large transparent shaft from which the air us evacuated, and
in which they drop things.
No. acceleration due to gravity depends upon i) height above the earth's surface ii) depth below the earth's surface iii) rotation of the earth iv) shape of the earth. it decreases with the height above the earth's surface:it decreases with the depth below the earth surface, it decreases with the speed of the rotation. it is zero at the centre of the earth.
The measure of how hard gravity pulls on an object is what?
This measurement is called weight. Weight is measured in Newtons (N). This is not the weight you refer to in general everyday life, what you are actually referring to is mass. Weight is the amount of force required to support an object against gravity.
What is the specific gravity for talc?
The specific gravity for talc is 2.7 to 2.8. Talc is the softest mineral found on earth. Some common colors of talc are white, pink, and beige.
How do you find the value of g by free fall method?
To find the value of acceleration due to gravity (g) using the free fall method, you can drop an object from a certain height and measure the time it takes to fall. Then, you can use the kinematic equation (h = \frac{1}{2}gt^2) (where h is the height, g is the acceleration due to gravity, and t is the time) to solve for g. By rearranging the equation to solve for g, you can determine the value of acceleration due to gravity.
What is the force that acts against gravity?
The force that acts against gravity is called the normal force. It is exerted by a surface supporting an object, pushing upwards to prevent the object from falling due to gravity.
A piece of metal has a mass of 200 g and a volume of 40 cm3 What is its specific gravity?
Specific gravity is the ratio of the density of a substance to the density of water. To calculate it, you first need to find the density of the metal by dividing its mass (200 g) by its volume (40 cm3), which equals 5 g/cm3. The density of water at 4 degrees Celsius is 1 g/cm3, so the specific gravity of the metal is 5.
