GRAVITATIONAL AND
ELECTRIC FIELDS
@STUDYNOTESBYM
, D) GRAVITATIONAL AND ELECTRIC FIELDS
1. GRAVITATIONAL FIELDS
NEWTON’S LAW OF UNIVERSAL GRAVITATION
Every particle with mass in the universe attracts every other particle with a force which is
directly proportional to the product of their masses and inversely proportional to the
square of the distance between their centres
𝒎𝟏 𝒎𝟐
𝑭=𝑮
𝒓𝟐
F: force of gravitational attraction (N)
G: gravitational constant = 6,7 × 10−11
m1: mass of object 1
m2: mass of object 2
r: distance between their centres
WEIGHT (Fg)
The gravitational force that the earth exerts on any object on or near its surface
W/Fg: gravitational force
(N)
m: mass of the object (kg)
g: gravitational
acceleration = 9,8m. s −2
• Weight is a force measured in Newtons
• It is determined by gravity
• The magnitude of weight depends on where the object is in the solar system
FORCE FIELDS
A region of space in which an object will experience a force
ELECTRIC FIELDS
@STUDYNOTESBYM
, D) GRAVITATIONAL AND ELECTRIC FIELDS
1. GRAVITATIONAL FIELDS
NEWTON’S LAW OF UNIVERSAL GRAVITATION
Every particle with mass in the universe attracts every other particle with a force which is
directly proportional to the product of their masses and inversely proportional to the
square of the distance between their centres
𝒎𝟏 𝒎𝟐
𝑭=𝑮
𝒓𝟐
F: force of gravitational attraction (N)
G: gravitational constant = 6,7 × 10−11
m1: mass of object 1
m2: mass of object 2
r: distance between their centres
WEIGHT (Fg)
The gravitational force that the earth exerts on any object on or near its surface
W/Fg: gravitational force
(N)
m: mass of the object (kg)
g: gravitational
acceleration = 9,8m. s −2
• Weight is a force measured in Newtons
• It is determined by gravity
• The magnitude of weight depends on where the object is in the solar system
FORCE FIELDS
A region of space in which an object will experience a force
