Acceleration, Mass & Gravitational Tug

In summary, gravitational tug acting on an object does not cause an increase in mass, but it does result in an increase in energy. This energy is equal to the momentum increase for objects with zero rest mass, according to the equation E = pc. This was demonstrated in the Pound and Rebka Mossbauer Effect experiment at Harvard.
  • #1
tanzanos
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If an object increases mass with acceleration due to the energy driving force converting to mass then is it true also when there is no driving force but gravitational tug acting to accelerate the object?
 
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  • #2
No, an object increase mass due to the link of space and time according to theory of relativity. This increase is a relative effect.
 
  • #3
tanzanos said:
If an object increases mass with acceleration due to the energy driving force converting to mass then is it true also when there is no driving force but gravitational tug acting to accelerate the object?
Could you be thinking about the Pound and Rebka Mossbauer Effect experiment at Harvard in which photons from an iron-57 source falling from the roof to the basement of the phyics building gained a measurable amount of energy? In this case there was no mass gained, but the photon energy gain was due to gravity.
 
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  • #4
Bob S said:
Could you be thinking about the Pound and Rebka Mossbauer Effect experiment at Harvard in which photons from an iron-57 source falling from the roof to the basement of the phyics building gained a measurable amount of energy? In this case there was no mass gained, but the photon energy gain was due to gravity.
So gravitational tug causes an object to gain energy but that energy does not convert to mass? What happens to this energy?
 
  • #5
tanzanos said:
So gravitational tug causes an object to gain energy but that energy does not convert to mass? What happens to this energy?
For photons, E2=(pc)2 + (m0c2)2, so for photons with zero rest mass, the energy increase is equal to the momentum increase; E = pc.
 

FAQ: Acceleration, Mass & Gravitational Tug

What is acceleration?

Acceleration is the rate of change of an object's velocity over time. It is a vector quantity, meaning it has both magnitude and direction. It is typically measured in meters per second squared (m/s^2).

How is acceleration related to mass?

According to Newton's Second Law of Motion, acceleration is directly proportional to the net force acting on an object and inversely proportional to the mass of the object. This means that the greater the mass, the greater the force needed to accelerate the object.

What is the difference between mass and weight?

Mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity acting on an object. Mass is typically measured in kilograms (kg), while weight is measured in newtons (N).

How does gravitational tug affect objects?

Gravitational tug, or gravitational force, is the force of attraction between two objects due to their masses. The strength of this force depends on the masses of the objects and the distance between them. The greater the mass of the objects, the stronger the gravitational tug between them.

How does the mass of an object affect its acceleration due to gravity?

The mass of an object does not directly affect its acceleration due to gravity. According to the Universal Law of Gravitation, the acceleration due to gravity is the same for all objects, regardless of their mass. However, a larger mass will experience a greater force of gravity, which can affect its overall motion.

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