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Angular frequency equation

ω = 2πf

gravitational field is always attractive

Explain why gravitational field is not the same as electric field

centripetal acceleration equation

a = v^2/r = vω

centripetal force equation

F = mv2/r = mrω^2

Define gravitational field strength

force per unit mass

Gravitational force equation

F = GMm/r2

g = GM/r2

Gravitational field strength equation

Gravitational potential equation

V = -GM/r, where V is the gravitational potential per unit mass, G is the universal gravitational constant, M is the mass causing the field and r is the separation of the objects' centre

E = GMm/2r

Kinetic energy of satellite equation

E = -GMm/r

Potential energy of satellite equation

v^2= (GM/r) =

Escape speed of satellite

Describe the properties of geostationary satellites

Above the equator moving in easterly direction and have the same period as the Earth

What is the significance of the negative sign of gravitational potential?

work got out to move to the point and it is always attractive

Define radian

angle subtended at the centre of the circle and arc length equal to the radius

angular velocity

represented by a lower case omega (ω)

centripetal acceleration

a = centripetal acceleration

Centripetal Force

A force directed towards the center of a circle that causes an object to follow a circular path

field of force

region (of space) where a body experiences a force

geostationary orbit

an equatorial orbit which stays on the same point on the Earth with a period of 24 hours and moves from west to east

Gravitational field

a force field that exists in the space around every mass or group of masses

Gravitational Field Strength

gravitational force per unit mass experienced by a mass placed at that point

Gravitational Potential

work done per unit mass by an external agent in bringing a mass from infinity to that point without a change in kinetic energy.

gravitational potential energy

an icicle hanging from a rooftop

Newton's Law of Gravitation/Gravitational Force

Newton's law of gravitation states that the force of attraction between two point masses is directly proportional to the product of their masses and inversely proportional to the square of their distance apart.

Potential Energy

(mass) x (g) x (height)

Radian

An angle whose arc length is equal to its radius

Uniform Circular motion

A particle moves in a circle with a constant speed