Gravitational fields

edwinesosa's version from 2015-04-22 19:54


Question Answer
what is gravitational field strengththe force per unit mass on a small test mass placed in a gravitational field
what is a radial fieldwhere the gravitational field lines act towards the centre of a body
what is a uniform fieldwhere the gravitational force is of equal magnitude and direction throughout the field
what is gravitational potential energythe work done per unit mass to move a small object from infinity to that point
what is an equipotentiala line of constant potential
what is potential gradientthe change in potential per metre
shape of g against r graphstraight line up to R=g, then then steep curve downwards getting increasingly shallow
why is g against r linear inside the objectonly the mass of sphere up to radius r gives a resultant force on the object

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