A-Level Physics Flashcards

Definition of radian

Definition of radian

The measure of the angle subtended at the center of the circle when the radius is equal to the arc length/linear displacement.

Formula for angular speed

ω = dθ/dt = 2π/T

Formulae for tangential/linear speed

v = ωr

v = ds/dt

Formulae for centripetal acceleration

a_c = v²/r

a_c = ω²r

Formulae for centripetal force

F_c = ma_c

F_c = mv²/r

F_c = mω²r

Newton’s Law of Gravitation equation

F_g = GMm/r²

Newton’s Law of Gravitation definition

The force of attraction between two point masses is directly proportional to the product of their masses and inversely proportional to their separation squared.

Terms of a satellite in a geostationary orbit

1. Orbits from East to West

2. Orbits directly above the equator

3. Has and orbital period of 24 hours

Gravitational Field definition

Force per unit mass

Gravitational Field Strength equation

g = GM/r²

Gravitational Potential at a Point definition

The work done per unit mass in bringing a small test mass from infinity to the point.