gravitation Flashcards
1
Q
gravitation FORCE
A
Gm1m2/r2
2
Q
value of G
A
6.667*10^-11
3
Q
gravitation field
A
4G(m2-m1)/r2
4
Q
force due to ring
A
GMx/(r2+x2)^3/2
5
Q
acc due to gravity
A
g=GM/R
6
Q
variation in g due to height
A
g’=g(1-2h/r)
7
Q
percentage change in height
A
-200h/r per cent
8
Q
VARIATION DUE TO DEPTH
A
G’=G(1-d/r)
9
Q
percent change due to depth
A
-100d/r per cnt
10
Q
variation due to rotation
A
g’g-w2rcos2@
11
Q
at equator
A
g-w2r
12
Q
g pole
A
g
13
Q
gravitation potential energy
A
u=-gm1m2/r2
14
Q
escape velocity
A
underroot 2gr
15
Q
v escape for earth
A
11.2 km/s
