Lecture Demonstrations
Lecture Demonstrations

Mechanics

Newton's Second Law 

Used to demonstrate the effect of having unbalanced weights on the two sides of a pulley.

APPARATUS:
LOCATION:
     Pulley
B3
     Rope
D2
     Modeling clay  
     Weight
A5


Begin the experiment by having equal weights on both sides of the pulley. Show that they are either stationary or moving with a constant velocity indicating zero acceleration. Add a small piece of clay to one of the weights. Show that the weight is moving up and down with a certain acceleration.