DIFFERENT KINDS OF FORCES
WEIGHT (Fg)
Weight – the gravitational force that the earth exerts on any object near its
surface
Fg = mg
m = mass
g = 9.8
NORMAL FORCE (FN)
Normal force – the perpendicular force exerted by a surface on an object in
contact with it
o the normal force is NOT equal to the weight on an incline plane
o Fg is always the hypotenuse in problems like this
WEIGHT (Fg)
Weight – the gravitational force that the earth exerts on any object near its
surface
Fg = mg
m = mass
g = 9.8
NORMAL FORCE (FN)
Normal force – the perpendicular force exerted by a surface on an object in
contact with it
o the normal force is NOT equal to the weight on an incline plane
o Fg is always the hypotenuse in problems like this
