Gravitational Fields Flashcards
1
Q
What is netons law of gravitation ?
A
Force is directly proportional to the sum of masses and inversely proportional to the square of separation
2
Q
Formula of gravitation
A
F=GMm/r2
3
Q
What is gravitational field strength
A
Gravitational force exerted per unit mass on a small object placed at a point
4
Q
What is gravitational potential
A
Work done per unit mass to bring a point mass from infinity
5
Q
Formula of gravitational field strength
A
g=GM/r2
6
Q
Formula of gravitational potential
A
-GM/r
7
Q
What is orbital speeds formula
A
V2=GM/r
8
Q
What is the formula for the orbital period
A
T2= (4π2/GM)×r3
9
Q
What are the two formulas for escape velocity?
A
V = √2GM/R and V = √2gR
10
Q
Formula of escape velocity
A
V = √2GM/R or √2gR
