gravitation

define newtons law of gravitiation

what is G, its value and units

describe what a force - distance graph looks like

whats the mass of the earth and its radius?

what is a gravitational field?

define gravitational field strength

is gravitational field strength a vector or scalar?

if a = F/m and g=F/m, what statement can be made?

what is a gravitational field around a spherical object called?

what do gravitational field lines show?

3 features of field lines

derive the formula of gravitational field strength when dependent on volume and density

define gravitational potential and give units

why is the gravitational potential around a mass always negative?

define gravitational potential energy

formula for gravitational potential energy

4 features of gravitational equipotentials

in a uniform gravitational field give the formula to work out g and state whether g is constant or variable

whats the formula to find out change in potential in a non uniform gravitational field

derivation of time period and radius of a planet

why is the energy of a satellite in orbit always equal to a constant?

why does a satellite move around a planet at a constant speed

why do astronauts appear weightless? and satellite remain in orbit?

4 features of geostationary satellites

4 features of polar satellites