®
Model No. CI-6537
Force Sensor
11
Newton’s Third Law
“For every action, there is an opposite but equal reaction.” Whenever
one object exerts a force on a second object, the second object exerts
an equal and opposite force on the first. Use two force sensors. Set up
the computer program so that a push will be negative for one of the
sensors. Hook the two sensors together, and use the computer program
to measure the force from both force sensors as you pull one force
sensor with the second force sensor.
Newton’s Third Law: Impulse/Collision
The impulse during a collision equals the change in momentum during
the collision:
F
∆
t =
∆
mv
Mount the Force Sensor at one end of the track. Arrange the cart and
Motion Sensor so the Motion Sensor can measure the motion of the
cart as it is pushed toward the Force Sensor, collides with it, and
rebounds. Use the computer program to determine the impulse and the
change in momentum during the collision.
Motion Sensor
Force Sensor
Pulley
Mass
Friction Pad
Cart
Figure 8: Setup for Friction Experiment
T
A R E
Figure 9: Setup for Impulse/Collision Experiment
Mounting Bracket
Force Sensor
Cart
Motion Sensor
