Atwood's Machine Experiment - EX-5501



In this experiment designed for use with PASCO Capstone software, students use a very low mass/low friction pulley and measure the changing velocity of the unbalanced mass system. They interpret the slope of the velocity graph as accelerations. They examine the effect of the rotational inertia of the pulley and estimate the friction forces based on experimental data.

  • Newton's 2nd Law of Motion
  • Newton's 2nd Law of Rotational Motion
  • Rotational Inertia

Enlarge Image
The acceleration of the weights is determined using the slope of the velocity vs. time graph. From this, the acceleration due to gravity can be found.

PASCO Advantage

The Super Pulley/Photogate System makes it easy for students to set up the apparatus and take data. Analysis includes accounting for friction and the rotational inertia of the pulley.

Buying Guide

Ohaus Triple-Beam Balance (with Tare)
Digital Calipers
Ohaus Triple-Beam Balance (with Tare)   SE-8707
Digital Calipers   SE-8710

Interface Required

A 550 Universal Interface or 850 Universal Interface is required for use with this product.  Compare the 550 and 850.

Have specific questions or need more information? Contact Teacher and Technical Support.  We're here to help!

Software Required

This product requires or recommends PASCO Capstone for data collection and analysis.