Gravity

Force is needed to lift a bag because the bag has mass, which causes it to experience the force of gravity pulling it down. By applying an upward force greater than the force of gravity, the bag can be lifted against gravity.

No. Two different people, standing on identical scales on the same Earth, measure

different numbers of pounds. So neither of those measurements tells you anything

about Earth's gravity.

Pounds PER UNIT OF MASS is a measure of gravity. On Earth, no matter who is on

the scale, it's always 2.205 pounds (9.81 newtons) per kilogram of mass.

And ... surprise surprise ... [force per unit mass] is [acceleration], and that's how

gravity is always described.

Gravity depends on the mass of the objects being attracted to each other, and the distance between them. G = m1 x m2 / d2 Gravity (its force) equals the product of the masses of the two objects attracting each other divided by the square of the distance between them. Or, if you like, gravimetric attraction is directly proportional to the product of the masses of the objects being considered and inversely proportional to the square of the distance between them.

An anti-gravity chair is designed to recline in a way that helps distribute your body weight evenly, reducing pressure on the spine and relieving muscle tension. It can promote relaxation, improve circulation, and reduce stress on the body.

A zero gravity chair helps relieve back pain by reducing pressure on the spine and promoting proper alignment by fully supporting the body in a reclined position. This helps to decompress the spine and alleviate strain on the back muscles, resulting in improved circulation and reduced pain.

The term acceleration due to gravity refers to the effects of the earth's gravitational pull on the body. It would differ if one was to be measuring it on other planets such as the Moon, Jupiter or Pluto.

Yes, electricity can be produced from gravity.

One popular method is to find a place where gravity is pulling water down,

and guide the water through an electrical generator while it's falling. The

power that comes out of the generator is then called "hydroelectric" power.

A lot of it can be found in places connected to Hoover Dam, Niagara Falls, etc.

Well, first of all, we know that the period of a simple pendulum depends on

its length. You haven't mentioned any length, and that's an important clue.

In this case, the length doesn't matter. A pendulum in free fall, or inside

something else that is, doesn't swing. Wherever you put the bob, it just

floats there.

But you knew that.

Dipper Pines is taller than Mabel Pines in the animated TV show "Gravity Falls."

The same way you convert any density to specific gravity. Just divide the density of the substance (crude oil in this case) by the density of the reference substance (usually water, for liquids).

To escape Earth's gravity, an object must overcome the force pulling it downward, known as its weight. The amount of thrust needed would have to be greater than or equal to the object's weight on Earth, which in this case is 1520 pounds. However, this is a simplified explanation as additional factors like air resistance, gravitational pull, and velocity need to be considered in actual space travel calculations.

If you want to pretend that there are vampires, then you can go ahead and pretend

that they have whatever powers you want them to have. It's your story.

acceleration due to gravity of earth is 9.8ms-2

An acceleration is a velocity divided by a time, so you have:

acceleration = velocity / time

acceleration = (distance / time) / time

acceleration = distance / time2

The gravitational field can also be expressed as force / mass; this is equivalent to distance / time2.

To go against gravity, you need a force stronger than gravity pulling you upwards. This could be achieved by using a propulsion system like a rocket or thrusters. Alternatively, you could also use lift generated by wings, rotors, or engines to overcome the force of gravity.

That all depends on where you are. On the surface of the Earth, it's 9.807 .

It's 1.623 on the surface of the moon, and 3.711 on Mars. (All rounded.)

And it's not an "acceleration force". It's just acceleration. To get a force,

you have to multiply acceleration by a mass.

As per Law of Gravitation, there is no gravitational force on a massless object, so it

will not accelerate.

But mass-less object does not exist. It should have some mass and all objects fall down on

earth with same acceleration irrespective of their mass(if air resistance is neglected).

The gravitational force between two objects depends on their masses and the distance between them. The force of gravity increases with the mass of the objects and decreases as the distance between them increases.

GPE stands for gravitational potential energy in physics. It is the energy stored in an object due to its position in a gravitational field. GPE is calculated as the product of an object's mass, the acceleration due to gravity, and its height above a reference point.

Force is the first derivative of energy. The gravitation energy is

W = -mGm/r + cmV = -mvh/r + cP

Gravity energy is a Quaternion energy consisting of a scalar force -mGM/r and a vector energy cmV = cP a momentum vector energy, the so-called Dark Energy.

In addition physics does not recognize the four space derivative X,properly a Quaternion derivative, X =[d/dr, DEL].

With these reflections the Force is the first derivative and a Quaternion Force.

Force F= XW = [d/dr, DEL][ -vh/r ,cP]

F = [vh/r2 -cDEL.P, cdP/dr -DEL vh/r + cDELxP]

F = [vp/r - cp/r cos(P), -cp/r 1P + vp/r 1R + cp/r sin(P) 1RxP]

F = cp/r[v/c -cos(P), -1P + v/c 1R + sin(P) 1RXP]

cp/r = cp/ct=p/t = mv/t = ma.

The vector energy provides the centrifugal force that keeps the mass m from falling into the center. The centrifugal force is teh Divergence of the vector energy, cDEL.P = -cp/r cos(P).

It isn't quite clear what you mean. Depending on the context, gravity is either expressed as a force (measured in newton), or as a field (measured in newton/kilogram), so you can't compare it directly with a mass.

The pen is at rest as long as it is not moving relative to its surroundings. If the pen is stationary, it is considered to be at rest.

It's forced upwards by the pressure of the blood behind it. Additionally, there are valves in veins and arteries to stop the blood flowing backwards (kind of like a door that only opens one way).

The unit of acceleration is Length/Time2 .

It depends on how great the gravitational gradients are. Gravity follows the Inverse square law, so The gravitational attraction force between two point masses is directly proportional to the product of their masses and inversely proportional to the square of their separation distance . The force is always attractive and acts along the line joining them.(Wikipedia says this but my physics text book confirms, in case you wanted an exact answer) In extreme situations, like that found around stellar mass black holes, the gravitational gradient between say your head and feet is great enough that it will rip you in half, thus killing you. Don't believe me, look up spaghettification :-). In super massive black holes, you have to descend fairly deep into the black hole for the effect to take hold