1 Flashcards
Field Strength
F per unit ___ on a small test ____ placed at that point in a field.
Relative PE
WD moving ____ object between 2 points in field
Abs0lute PE
WD moving _____ object between 0 potential to that point in field
RELative Potential
WD per unit ____ moving small +ve test ____ between 2 points in field
Abs0lute Potential
WD per unit ____ moving small +ve test ___ between 0 potential to that point in field
Newton Law of Gravitation
every paqrticle attracts each other with F thats directly proportional to product of their masses n inversly proportional to square of their radial seperation r
Potential (Radial)
PE ( G)
PE (E)
FS (E/G)
=kQ/r
=GMm/r = Fh
kQQ/r = VQ
= -ve gradient Ve/r or Vg/r
Local Zero
gravitational fields near the earth surface can be taken as uniform and the local zero is set at ((table, floor, sea level))
Absolute Zero
Used with radial fields separated to infinite range. Due inverse square law, absolute zero can be taken to be at infinity
Conservative fields
Both fields conservative therefore change in P/PE moving between two points depends only on straight line distance and not on path.