Check out our YouTube Channel called
 Show Me The Physics

"What values would a

bathroom scale have on

 a trip from the 1st

to the fifteenth floor?"

Imagine a person weighs 600 N

 

 

 

 

 

 

 

Start - Scale reading goes up
(greater than 600 N) Inertia
 (Object rest tends to stay at rest)

 

 

Most of trip up:

(W = 600 N) Constant velocity
Net force = 0

 

 

Slow Down and Stop
- (Scale reading less than 600 N)
Object in motion tends to stay in motion

 

 

Is this elevator going up or down?

 

 

 

 

 

 

 

The elevator was going down.

 

 

 

 

2nd Law - Relationship between F, m, a

 

 

Inertia - Dr. Dave Hall of Fame

 

 

Unbalanced forces
cause objects to accelerate:

 

 

(m) a  =    Fnet (N)
(s2) m (Kg)

 

Fnet = Resultant

 

 

 

 

 

1.  Acceleration is directly proportional to the force exerted on an object

 

 

 

a F 





x 3 
x 3








x 2 
x 2





 
divided by 3  divided by 3






divided by 2  divided by 2









x 2/3
 
x 2/3




 









quartered
 
quartered



 


 

 

"All cars are moving to the right. Which are speeding up. Which are slowing down? Which are moving at constant velocity"

Jan 2006

 

 

 

 

1 - Speeding up 2 - Slowing Down, 3,4 constant velocity

 

 

 

 

 

 

 

 


 

 

Check out this

Video at Georgia Pacific Broadcasting

 

 

 

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