gravitational fields of force unit 4

Question 1

newtons law of gravitation

Answer 1

gravitational force between two masses m andM a distance r apart is proportinal to the product of the masses and is inversley proportionakl to the square of the distance apart.
F=GMm/r2 N

Question 2

G

Answer 2

gravitational constant ( universaz\l )

Question 3

gravitational field strength (g)

Answer 3

force acting on 1 kg or unit mass Nkg-1 vector quant

Question 4

gravitational potential Vg

Answer 4

at a cetain position in a gravity field “the work done bringing unit mass from infinity to that point. Jkg-1

Question 5

gravitational potential energy GPE

Answer 5

GPE of a mass at a certain position in a gravity field is ‘ the work done bringing mass m from infinity to that point.’ J scalar quant

Question 6

GPE equation

Answer 6

GPE = -GMm/r

Question 7

g field strength eq

Answer 7

g=GM/r2

Question 8

grav potential Vg eq

Answer 8

Vg = -GM/r

Question 9

newtons grav law eq

Answer 9

F = Gm1m2/r2

Question 10

change on Vg

Answer 10

final-initial

Question 11

g field at centre of earth

Answer 11

zero

Question 12

g fied directed (earth)

Answer 12

always towards

Question 13

g field strength quant

Answer 13

vector

Question 14

GPE quant

Answer 14

scalar