Gravitational Field Lines
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Gravitational field strength is a vector quantity.
They can only form closed loops extend to infinity in both directions or.
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Gravitational field lines. The gravitational field due to a body is thus also infinite we cannot see or touch this field but we can try to model it using field lines or lines of force. Magnitude of gravitational field is proportional to the number of field lines per unit area through a surface perpendicular to the lines. The concepts of field and field lines will be used again when we look at electric fields and magnetic fields. As youve already seen you pull on the earth with exactly the same force as it pulls on you.
Gravitational field strength g. The pattern of lines sometimes referred to as electric field lines point in the direction that a positive test charge would. However your gravitational field is intrinsically much much weaker than that of the earth. A gravitational field has no sources it has sinks at masses and it has neither elsewhere gravitational field lines come from infinity and end at masses.
Therefore g is larger when lines are close together and smaller when they are far apart. In physics a gravitational field is a model used to explain the influence that a massive body extends into the space around itself producing a force on another massive body. Always use the given value for g. So to visualize the gravitational field in this room or on a bigger scale such as the whole solar system imagine drawing a vector representing the gravitational force on a one kilogram mass at many different points in.
Thus a gravitational field is used to explain gravitational phenomena and is measured in newtons per kilogram nkg. If the gravitational field strength at any point is known then the size of the force can be calculated. Its direction is towards the object that causes the field. Physics qa library draw gravitational field lines between 2 masses electric field lines between a positive and a negative charge electric field lines between 2 positive charges and magnetic field lines around a magnet.
A pattern of several lines are drawn that extend between infinity and the source charge or from a source charge to a second nearby charge. Qualitatively describe the differences between the fields and the entities responsible for the field lines. What is a gravitational field the gravitational field is the force field in gravitational interaction which is a model used to explain and understand gravitational phenomena. A magnetic field has no sources or sinks gausss law for magnetism so its field lines have no start or end.
The less concentrated the field lines the smaller the force. Gravitational field lines black and equipotentials around the earth. The gravitational field at any point p in space is defined as the gravitational force felt by a tiny unit mass placed at p. A useful means of visually representing the vector nature of an electric field is through the use of electric field lines of force.