Newtons Gravity

Question 1

define weight

Answer 1

the Force an object experiences due to gravity

Question 2

define g

Answer 2

acceleration due to gravity

on earth (9.81m/s)

Question 3

state the equation for weight with units

Answer 3

W = m x g

units: N (newtons)

Question 4

describe the relationship of mass and gravitational force.

Answer 4

The magnitude of the gravitational force between 2 objects is directly proportional to the mass of both objects

Question 5

describe the relationship of mass and gravitational force IN SYMBOLS

Answer 5

F∝m1
F∝m2

Question 6

describe the relationship of distance and gravitational force

Answer 6

the magnitude of the gravitational force between 2 objects is inversely proportional to the square of the distance between them

Question 7

what is point mass?

Answer 7

When we assume that mass is concentrated in the centre of the object

Question 8

what are the 2 conditions for point mass

Answer 8

The object must be spherical and have uniform density.