Newton's law of gravitaion, all objects with mass attract each other.
204573
Pressure from the electromagnetic radiation streaming out of the star.\n\nIIRC, every star is at some equilibrium between gravitational collapse and flying apart due to heat/pressure in the interior generated by the fusion process.  When the fuel being burned in the fusion process is depleted, the star begins to collapse until the resulting pressure ignites the next fuel stage.
174237
Sir Isaac Newton developed the universal law of gravitation.  This law was developed as an inverse square law (1/(r squared) where r is the distance between the two objects.). This law states that all masses are attracted to each other no matter how far away from each other they are.  The key to this law is that the force at which they pull at each other is not only inversely proportional the square of their distance apart but also dependent on their mass.  The equation is as follows:  F=G*((m1*m2)/(r squared) where F is the force created between them, m1 and m2 are the masses in kg of the objects and G is the universal gravitation constant which is 6.642 x10(-11) N M(2)kg(-2) (these last letters are the units it is in.)\nThe Force at which any object on earth has is simply the mass of that object times the acceleration at the surface which is 9.81 m/s(2) this force is the same as if you put the mass of the earth times that objects mass times the gravitational consant then divided by the square of the distance to the center of the earth.\n     As far as I am aware all field forces are inverse square laws which basically means that the closer an objects gets to another the attraction between then increases as the square of the previous force.  The closer they are together the stronger the force.\n     The string theory was devised to explain multiple dimensions and as a way to explain how subatomic particles can seem to be in more than one place at once.  It consists of a tube (string) that has a very small diameter but is infinitely long.  In this theory there are also an infinite number of these strings floating all over invisibly each containg multiple galaxies.  Hope this helps.
367107
http://en.wikipedia.org/wiki/Newton%27s_law_of_universal_gravitation
356702
This is too freaky. A problem that goes out of its way to EMPHASIZE weight not mass would give the weight in Newtons. Gram is a unit of mass, not weight.
26292
In Newtonian space, F = ma or m = F / a (mass is equal to the force it has divided by the acceleration applied to it).\nIn an space-time continuum (relativity aspects as per Einstein) the mass is relative to its location and velocity with respect to the observer.
478041
In general, a net force is the sum of all the forces in a certain direction.
615822
No its a physics applicable on newton's law that every action has equal and opposite reaction like as sweet ends touch you it is a action and then yaa memory feeling react as a action so its prove that it is physics
187205
Yes, that is Newton's first law of motion.  Newton's discovery may seem like a no-brainer to you or I, but at that time many people believed that an object fell to the ground because it was attracted to the earth.  His research opened up many new theories and formulas in the field of physics like work, energy, power, momemtum, and acceleration.\n\n#2 - "The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object".  Basically force is equal to mass times acceleration.  F=ma\n\n#3 - "For every action, there is an equal and opposite reaction."  This means when you are leaning against a wall, you're applying 60kg of force against the wall and the wall is applying 60kg of force against you.  Action = Reaction.  When this equation doesn't balance out, something will usually break.
138787
How would you lose mass?  By Newton, the mass must not change.  By Einstein, the mass slightly inscreases.
313462
lots of gravity,  bends anything.
55958
All motion is relative.
123450
Your experimental model is corrupt in terms of current known information about matter and energy in a space-time continuum.  No prediction or calculation can be applied.\nWith two point masses, the only force in the system would be do to gravity.  This is an assumption based upon multiple moving masses in what we would call the normal physical universe.\nIf the distance between their centers (d) was sufficiently small, the points would be touching one another and no force would be exerted on the masses.  If the distance was sufficiently large, then it is possible that the force would be so small that the masses would not move.  Only in a finite range of distances would any gravity possibly exist.\nOne can make no assumptions about G as a gravitational constant, since G assumes that one of the masses is the earth.  One would need additional information about the masses to solve the problem.
10081
1.Objects at rest tend to remain at rest, and objects in motion tend to remain in motion in a straight line at constant speed.  2. Force=Mass times Velocity. 3. Every action has an equal and opposite reaction.
396265
try the formulas:\n\nforce = mass * aceleration\n\nwork = force * distance\n\n\n\n\nWell i dont speak english very well, but i hope i help u.\n\nKisses
407832
To understand this quandary you must look at a much bigger picture. since gravitational force is determined by an objects mass the earth actually exerts a much greater force on the object than the object exerts on the earth. Now this is where you must remember Newton's second law - if an unbalanced force acts on an object the object will accelerate in the direction of the force. The unbalanced force is the force of gravity the larger mass (earth in this case) exerts on the smaller object. The acceleration in the direction of the force is what we call gravity. It is true that the object exerts a reaction force but the maximum force it exerts is only the force of gravity it can generate based on it's mass. Since it weighs less it's force is not strong enough to move the earth.
439550
sir isaac newton. the man who "discovered" the law of gravity.
231166
Maybe it's not really a mass generated force at all. It could just be that it is masses effect on space-time. Actually, I guess it could be that it's not the earth for example that causes gravity but space-times effort to put matter in clumps and roll it into a ball. The bigger the mass the more space-time there is to push against it. Einstein's example was to imagine a bowling ball sitting on a large rubber sheet. The bowling ball would deform the sheet and the curvature of the rubber represented gravity in space-time. The closer you get to the ball the more curvature you have. That would explain why gravity is weaker with added distance.