Untitled Document

Physics Demo Number: 138

Approximate

Run Time: 10 min

Newton's Third Law With Data Studio-Science Workshop, Computer, Force Sensors

Demo Description

Set Up Two Carts, Two Force Sensors, and Fiddle With The Electronics

Scientific Principles

Graphic Newton's Third Law

Equipment

Two Pasco Carts
Two Force Sensors
USB Science Workshop 750 Interface
Pasco Track

Equipment Location

Kit (138) on [E-1-6]
Kit (138)
Kit (116)B on [B-1-4]
Back Left Wall , on bracket

Instructions

Two Pasco Carts with force sensors attached are placed on the demonstration track.

They are hooked to the USB 750 interface as shown in the second photo

and the third photo.

The interface is plugged into the USB port on the lecture hall PC as detailed in demo [136].

One then can open the activity hutson_3rdlaw.ds in the Physics folder in Data Studio as indicated in the fourth photo

to arrive at an output like the fifth photo

showing the equality of the two force sensor readings.

Writeup created by David A. Burba

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Demo138a Newton's 1st Law with help of Pasco Double Cart with coupling Handle

Refer to the following two photos

The cart in the right photo is actually two carts with the top one nested on a bottom cart with wheels.

If one sits on the top cart with the coupling handle inserted into the two holes seen at the right, then a push from an assistant will
suffice to put you into motion toward the 55 lb mass in the left photo. This will cause you and the carts to stop rather abruptly.

If however as you are gliding toward the round mass, you pull the coupling handle out, you and the top cart will glide on forward leaving the mass and bottom cart behind.