Gravity

it will cause a push on your spine

Gravity is the natural force that causes objects with mass to attract each other. On Earth, gravity is what keeps us grounded and gives weight to objects. Gravity also governs the motion of celestial bodies in space.

Gravity is a fundamental force in nature that is determined by the mass and distance between objects. It is controlled by the distribution of mass in the universe, with larger masses creating stronger gravitational pulls. According to general relativity, gravity is the curvature of spacetime caused by mass and energy.

Weight is felt by the body resisting the pull (acceleration) of gravity. Less acceleration means less pull thus less weight. The rate at which you are accelerating downward subtracts from the pull of gravity, thus your weight is less. If you fall, say from a cliff or tall building you accelerate downward at exactly the acceleration of gravity so you're completely weightless.

The universal law of gravity, formulated by Sir Isaac Newton, states that every mass attracts every other mass in the universe with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. This law explains how objects are attracted to each other and is responsible for phenomena like the motion of planets around the sun.

Objects will always be pulled to the center of the mass.

Air resistance is not a downward force; it acts in the opposite direction of an object's travel. When a plane is in flight the forward force provided by the engines works against the backwards force of air resistance. If the engines are turned off the plane will begin to slow down. As a plane moves foreward the air moving over its wings creates an upward force called lift, which works against the pull of gravity.

Gravity and radiation are not really opposites. Gravity is a force that attracts objects with mass towards each other, while radiation refers to the emission of energy in the form of waves or particles. They are distinct phenomena that operate independently of each other in nature.

Specific gravity may increase while refrigeration is occurring because the density of the refrigerant is higher at lower temperatures. As the refrigerant cools down, its molecules become more closely packed together, leading to an increase in specific gravity. This change can affect the performance and efficiency of the refrigeration system.

An object's mass is not affected by its volume, shape, or location. Mass remains constant regardless of external factors, as it represents the amount of matter an object contains.

Yes, gravity affects all objects regardless of their size. The force of gravity is proportional to an object's mass, so even small objects experience the gravitational pull of larger bodies like the Earth.

Raising a vehicle's center of gravity can make it more prone to tipping over during sharp turns or sudden maneuvers. This can reduce stability and control, especially at high speeds. Additionally, it may increase the risk of rollover accidents.

The normal force is a force that works with gravity. It is exerted by a surface in contact with an object and acts perpendicular to the surface to support the weight of the object and prevent it from falling through.

The center of gravity for a glider is typically located near the wing's midpoint. This is to ensure proper balance and stability during flight. Pilots carefully adjust the position of the payload and ballast to maintain the appropriate center of gravity for safe flying.

When standing normally, our center of gravity is located around our lower abdomen or pelvis region. This is where the majority of our body weight is concentrated, helping us maintain balance and stability.

Relative surface gravity is a measure comparing the force of gravity on one celestial body's surface to that of another celestial body. It takes into account the differences in mass and radius between the two bodies. This comparison helps in understanding the gravitational pull exerted on objects on the surface of different celestial bodies.

It is incorrect to say that a root will bend towards gravity if placed horizontally because plant roots grow in response to various stimuli such as light, moisture, and nutrients, in addition to gravity. The direction of root growth is influenced by the presence of these external cues, not just gravity alone. Therefore, roots may bend or grow in a particular direction based on multiple factors, not solely gravity.

Gravity is the force that pulls objects with mass towards each other. It is a fundamental force of nature that governs the motion of everything in the universe.

Well, first of all, your question is awkward, because "theory" doesn't mean "not fact".

Newton's law of universal gravitation can't be proven, but it's a very very very very
successful theory, in many ways.

-- When you take Newton's formula for gravity, and use calculus and geometry
to stroke it and squeeze it and massage it and roll it around in your hands, it
tells you what the shape and size of planetary orbits must be, and how the
planets must move in their orbits . . . and then when you measure the real
motions of the real planets, you find that they actually move as the formula
for gravity says they should.

-- When you take Newton's formula for gravity and use it to program the maneuvers
of a TV satellite, a moon landing, and a space probe to Pluto, those things work just
as you want them to.

None of this "proves" that the formula for gravity is correct in every possible way.
But so far, for more than 300 years, it has been the best formula we have, as long as
we don't try to use it for things that are very very tiny ... like smaller than atoms.

To calculate the center of gravity of a forklift, you need the weight distribution data provided by the manufacturer. Typically, the center of gravity is located at the midpoint of the wheelbase and at 60% of the forklift's total height from the floor to the overhead guard. It is crucial to have accurate measurements to ensure safe operation and stability.

Inertia is the tendency of an object to resist changes in its motion, whether at rest or in motion, unless acted upon by an external force. Gravity is the force of attraction between objects with mass, causing them to be drawn towards one another. These two concepts are related as gravity influences the motion of objects by affecting their inertia.

Gravity acts downward relative to the position of the plane. This means that gravity points towards the center of the Earth, pulling the plane and everything on it towards the ground.

Gold has the highest specific gravity among wood, water, gold, and quartz. Gold has a specific gravity of around 19.3 g/cm3, making it much denser than the other materials listed. Wood has a specific gravity ranging from 0.3 to 1.0 g/cm3, water has a specific gravity of 1.0 g/cm3, and quartz has a specific gravity of around 2.65 g/cm3.

The speed of a dropped stone will be non-uniform. The stone goes faster as it falls by an amount equal to 32 feet per second, per second. That means for each second of falling, the speed increases by another 32 feet per second until terminal velocity is reached.

No. As said above, what substance you are in does no affect the force of gravity. It can, however, affect what other forces act on you. The density of the human body is close to that of water. As a result, when you are submerged you experience an upward bouyancy force that is roughly equal to your weight which counteracts gravity and makes you feel weightless.