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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
Newton summarized his ideas about gravity in a law now called?
The Law of Motion and it states: a body remains at rest or in motion with a constant velocity unless acted upon by external force.
What is the relationship between buoyant force density and gravity?
The buoyant force is the upward force exerted on an object submerged in a fluid due to the density difference between the object and the fluid. Gravity acts downward on the object, while the buoyant force opposes gravity, creating the net force that determines whether the object sinks or floats. The buoyant force is directly related to the density of the fluid and the volume of the displaced fluid, according to Archimedes' principle.
Does the torsional pendulum depend on acceleration due to gravity?
Yes, the period of a torsional pendulum does depend on the acceleration due to gravity. The period is given by the formula T = 2π√(I/κ), where I is the moment of inertia and κ is the torsional spring constant, and both of these factors are influenced by gravity.
Are molecules attracted towards each other by gravity?
Molecules are not primarily attracted to each other by gravity. Instead, the attraction between molecules is typically due to intermolecular forces such as hydrogen bonding, van der Waals forces, and dipole-dipole interactions. Gravity is a fundamental force that acts on all objects with mass, but it is typically negligible at the scale of individual molecules.
dr/dt=(-64/5)(G^3/c^5)(m1*m2)((m1+m2)/r^3)
t=r^4*[15*5/(64*16*4)]*[(c^5/G^3)/(m1*m2(m1+m2))]
=> t = (60*10^3)^4*(75/4096)*((3*10^8)^5/((6.673*10^-11)^3)/((1.4*1.989*10^30)^2*(2*1.4*1.989*10^30))
=> t = (6)^4*(75/4096)*((3)^5/((6.673)^3)/((1.4*1.989)^2*(2*1.4*1.989))*10^(16+40+33-60-30)
What does the gravity of an object depend on?
The gravity of an object depends on its mass and the distance between it and another object. The larger the mass of an object and the closer it is to another object, the stronger the gravitational force between them.
What is the force of gravity on 1 kilogram?
The force of gravity on a 1 kilogram mass near the surface of the Earth is approximately 9.8 newtons. This is calculated using the formula F = m * g, where m is the mass and g is the acceleration due to gravity.
Anti-gravity refers to the hypothetical phenomenon of opposing the force of gravity, essentially allowing objects to float or levitate in defiance of the normal gravitational pull. It is often portrayed in science fiction but has not been scientifically proven or achieved.
Does mass and weight make gravity?
Mass is a measure of how much matter is in an object, while weight is the force of gravity acting on that object. Gravity is the force of attraction between objects with mass, so mass and gravity are related in that gravity acts on objects with mass to create weight.
What is the same about Gravity and inertia?
Gravity and inertia are both fundamental forces that affect the motion of objects. Gravity is the force that pulls objects towards each other, while inertia is the tendency of objects to resist changes in their state of motion. Both gravity and inertia play important roles in determining how objects move in the universe.
Of course, there is gravity everywhere on Earth otherwise, you would float away. If you drop something, does it not fall.
Does tums increase specific gravity of urine?
Tums, which contains calcium carbonate, can increase the pH of urine but typically does not significantly impact specific gravity. Specific gravity is a measure of the concentration of solutes in urine, while pH measures the acidity. Drinking more fluids and certain medical conditions, like dehydration or kidney problems, are more likely to impact specific gravity levels in urine.
How do we use decimals in the pressure of gravity?
Decimals can be used when measuring the force of gravity using the metric system, where the standard is 9.81 m/s^2. This value can be expressed with decimals, such as 9.81 m/s^2, to represent smaller increments of the gravitational acceleration. Decimals can help provide more precise measurements of the force of gravity in various calculations and scientific experiments.
Does different types of gravity affect robots?
Yes, different types of gravity can affect robots. Robots designed to operate in environments with different levels of gravity (such as on Earth, the moon, or Mars) need to be calibrated and programmed accordingly to ensure proper functionality and mobility. Changes in gravity can impact the robot's stability, movement capabilities, and energy consumption.
What is movement by water wind or gravity?
The process of movement by water, wind, or gravity is referred to as erosion. Erosion involves the transportation and displacement of soil, rocks, or other sediments by the action of water, wind, or gravity. This process plays a crucial role in shaping the Earth's surface over time.
What are the factors affecting the strength of the forces of gravity?
The strength of the gravitational forces between two masses depend on . . .
-- The product of the masses of the two masses, and
-- The distance between their centers of mass.
Is gravity field vector or scalar?
Gravitational field is a vector quantity, as it has both magnitude (strength) and direction. It represents the force experienced by a mass placed in the field due to the presence of another mass.
What is the specific gravity heavy fuel?
The specific gravity of heavy fuel oil can vary, but it typically ranges from 0.95 to 1.03. It is important to consult specific fuel oil specifications or test data to determine the precise specific gravity of a particular heavy fuel oil sample.
Do gravity affect the weight of an object?
Yes, gravity affects the weight of an object. Weight is the force exerted on an object due to gravity, so the strength of gravity directly impacts an object's weight. Objects will weigh less in a weaker gravitational field and more in a stronger one.
Why do plants respond light touch and gravity?
Plants respond to light touch through a process called thigmotropism, where they can change their growth in response to physical contact. Plants respond to gravity through gravitropism, which helps them orient their roots for water and nutrients and their stems for optimal light exposure. These responses are important for plant growth and survival in their environment.
How did the first person to discover gravity know it was gravity?
Sir Isaac Newton is credited with discovering gravity by observing an apple falling from a tree. He formulated the law of universal gravitation, which explains the force of attraction between all objects with mass. Newton's mathematical equations and experiments provided evidence for the existence of gravity and helped establish it as a fundamental force in the universe.
What is near weighlessness almost zero gravity?
Near weightlessness, or almost zero gravity, occurs when an object or person is in free fall, such as when skydiving or aboard an airplane in a parabolic flight path. In these conditions, the sensation of weight is greatly reduced due to the lack of support force from a solid surface, allowing for experiences similar to being in space. Astronauts in orbit experience true zero gravity due to the constant free fall around Earth.
How does gravity affect pushing and pulling?
Gravity is the attraction of mass to other mass. It is a "pull" rather than a "push" in that light.
Not really. This is a 17th century Newtonian way of looking at Gravity. A
According to Einstein's theory of General Relativity, gravity is a push. The space around an object is malleable and is warped by that object. So in Earth's case the Space is pushing us back down to earth.
There are many arguments for both pull and push when it comes to gravity, a search of the internet will lead you to many arguments for both push and pull
I disagree with the above Gravity is still a PULL rather than a PUSH Anyone else care to add ?
No it is a pushing effect. Think of earth as being immersed in pool of dark matter, which could also be described as Einstein's Space-time stuff, it is pressure of that displacement on neutral particles in your body and other everyday stuff that results in the downward force. An interesting fact that proves this is that as soon as you go underground you become slightly lighter. Another fact is that when you go into space just outside of the atmosphere you become weightless within a relatively short distance (Note from J. Craig: This is not true. You feel weightless if you are falling around the Earth, which is called orbit.). If it were a pulling force you would lose weight at the inverse square law and it does not happen that way. Also if you consider the Moon as shielding us from gravity rather than pulling us, it would create the same effect.
Now, while the above is a very good example of the theoretical background of the advancement of gravity discussions, it's mostly useless to someone wanting applicable knowledge about gravity.
With this said, gravity is BOTH a push and a pull. Think about a horse and carriage. To the observer, the horse is pulling the carriage. To the horse, however, it feels as though it's pushing on the chest brace to move the carriage. Even in engineering calculations using vector forces, the difference between push and pulldoesn't matter much when doing calculations with particle physics.
It should be of course both. There's no need to scientific detail. You just have to understand the definition of the words push and pull. Pushing simply means that the mass of the motivating force is coming from behind. Pulling means the mass of the motivation force is in front. The effects of gravity is seemingly tethered to all parts of our body, as if we were submerged in it, so it could be seen as doing both.
The difference between push and pull is merely a semantic argument.
Why won't a book resting on a table fall to the ground?
The book remains on the table due to gravity and the normal force exerted by the table upward, balancing the downward force of gravity acting on the book. As long as these forces are balanced, the book will remain at rest on the table.
Which possesses greater gravity Jupiter or earth?
Jupiter. It's gravity is 2.528 times greater than earths.
