The PASPORT Rotary Motion Sensor measures angle, angular velocity, angular acceleration and linear position, velocity, and acceleration.
See the Buying Guide for this item's required, recommended, and additional accessories.
Product Summary
The PASPORT Rotary Motion Sensor is used to measure position, velocity, and acceleration, both angular and linear, with high resolution (4000 divisions/rev). The maximum spin rate is 30 rev/sec.
How it Works: The Rotary Motion Sensor detects the angle with an optical encoder which interrupts the light beam 4000 times per revolution of the Rotary Motion Sensor shaft. The 6.35 mm diameter, dual ball-bearing shaft extends from both sides of the unit so objects can be attached to either side. The rod clamp, which can be attached to three sides of the sensor, allows the unit to be mounted in almost any orientation. It has a three-step pulley to vary the applied torque. The PASCO Super Pulley with Clamp can be clamped to the platform on the Rotary Motion Sensor to apply a torque with a hanging mass.
Features
- Three-step pulley (10, 29, and 48 mm in diameter) is included.
- Rod clamp can be attached on three sides
- Built-in storage for the hex key for removing the rod clamp.
- Measures the direction of rotation
- Ball bearings minimize friction and provide mechanical support to rotating objects
Applications
- Verify conservation of angular momentum
- Calculate the rotational inertia of a disk, ring, and point mass
- Measure the displacement, velocity, and acceleration of a cart on a track
- Conduct quantitative analysis of simple harmonic motion
- Measure the acceleration of a cart caused by a mass hung over a pulley
- Accurately measure the angular acceleration of systems with constant torque
Product Specifications
| Resolution | Angular: 0.09° (0.00157 rad) ≡ Linear: 0.0078 mm |
| Maximum Rotation Rate | 30 revs/s |
| Sensor Dimensions | 10 cm x 5 cm x 3.75 cm |
| Three-step Pulley | 10 mm, 29 mm, and 48 mm diameters |
| Shaft Diameter | 6.35 mm |
| Optical Encoder | Bidirectional to indicate the direction of motion; 4000 divisions/rev |
Data Collection Software
This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »
Interface Required
This product requires a PASCO Interface to connect to your computer or device. We recommend the following option(s). For a breakdown of features, capabilities, and additional options, see our Interface Comparison Guide »
Dedicated Datalogging with SPARK LXi2
Consider an all-in-one, touchscreen data collection, graphing, and analysis tool for students. Designed for use with wired and wireless sensors, the SPARK LXi2 Datalogger simultaneously accommodates up to five wireless sensors and includes two ports for blue PASPORT sensors. It features an interactive, icon-based user interface within a shock-absorbing case and arrives packaged with SPARKvue, MatchGraph!, and Spectrometry software for interactive data collection and analysis. It can additionally connect via Bluetooth to the following interfaces: AirLink, SPARKlink Air, and 550 Universal Interface.
Buying Guide
| Recommended Accessories | P/N | |
|---|---|---|
| Rotational Inertia Accessory | ME-3420 | |
| Induction Wand | EM-8099 | |
| Linear Motion Accessory | CI-6688A | |
| Pendulum Accessory | ME-8969 | |
| Chaos/Driven Harmonic Accessory | CI-6689A | |
| Dynamics Track Mount | CI-6692 | |
| Mini Ballistic Pendulum Accessory | ME-6829 |
| Replacement Parts | P/N | |
|---|---|---|
| 3-Step Pulley for Rotary Motion Sensor | CI-6693 | |
| Rod Clamp for Rotary Motion Sensor | ME-8945 |
| Also Available | P/N | |
|---|---|---|
| A-Base Rotational Adapter | CI-6690 |
Product Guides & Articles
Rotary Motion Sensors
Rotary motion sensors, often referred to as rotary encoders or angular position sensors, are vital components in the realm of science and engineering, designed to measure and track the rotational movement of objects with precision. These sensors are employed to determine the angular displacement, speed, and direction of rotation of various mechanical components such as motors, shafts, and wheels.
Experiment Library
Perform the following experiments and more with the PASPORT Rotary Motion Sensor.
Visit PASCO's Experiment Library to view more activities.
Variable-g Pendulum
A pendulum is constrained to oscillate in a plane tilted at an angle from the vertical. This effectively reduces the acceleration due to gravity because the restoring force is decreased. The Acceleration Sensor is fastened to...
Conservation of Angular Momentum
A disk is dropped onto a rotating disk. The initial angular momentum is compared to the final angular momentum, and the initial kinetic energy is compared to the final kinetic energy.
Conservation of Energy of a Simple Pendulum
The purpose of this experiment is to use measurements of the motion of a simple pendulum to calculate and compare the different types of energy present in the system.
Light Intensity versus Distance
The relative light intensity versus distance from a point light source is plotted. As the Light Sensor is moved by hand, the string attached to the Light Sensor that passes over the Rotary Motion Sensor pulley to a hanging mass...
Physical Pendulum Minimum Period
The period of a physical pendulum is measured with its mass in various positions. Starting with the mass furthest from the pivot gives a long period. However, if you move the mass up close to the pivot, the period will be very...
Centripetal Force
The dependence of centripetal force on radius and angular velocity is investigated. A rigid pendulum hangs from a force sensor mounted directly onto the shaft of the Rotary Motion Sensor so both force and angular velocity are...
Polarization of Light
The plot of light intensity versus angle between two polarizers is fitted to the square of the cosine of the angle, verifying the Law of Malus.
Electromagnetic Induction
In this lab, students will use an induction wand, rotary motion sensor, variable gap magnet, and magnetic field sensor to determine how the rate of change of magnetic flux through a coil affects the magnitude and direction of...
Large Amplitude Pendulum
This experiment explores the oscillatory motion of a physical pendulum for both small and large amplitudes. Waveforms are examined for angular displacement, velocity and acceleration, and the dependence of the period of a pendulum...
Rotational Inertia
A known torque is applied to the three-step pulley on the Rotary Motion Sensor, causing a disk and ring to rotate. The resulting angular acceleration is measured using the slope of a graph of angular velocity versus time. The...
Newton’s Second Law for Rotation
Newton's Second Law for rotation: The resulting angular acceleration (α) of an object is directly proportional to the net torque (τ) on that object. The hanging mass applies a torque to the shaft of the Rotary Motion Sensor...
Physical Pendulum
A rod and a disk oscillate as a physical pendulum. The periods are measured directly by the Rotary Motion Sensor, and the values are compared to the theoretical periods calculated from the dimensions of the pendula.
Support Documents
| Manuals | ||
|---|---|---|
| PASPORT Rotary Motion Sensor Manual | English - 588.17 KB | |
| Sensor de rotación | Spanish - 1.11 MB | |
| PASPORT Rotary Motion Sensor | Russian - 593.51 KB | |
| Other Documents | ||
| PASPORT Rotary Motion Sensor Experiment Guide | English - 941.19 KB | |
| Knowledge Base | ||
| Principle of Operation - Rotary Motion Sensor | Apr 14th, 2022 | |
