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 »
Buying Guide
Recommended Accessories | P/N | Price |
---|---|---|
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 | Price |
---|---|---|
3-Step Pulley for Rotary Motion Sensor | CI-6693 | -- |
Rod Clamp for Rotary Motion Sensor | ME-8945 | -- |
Also Available | P/N | Price |
---|---|---|
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.
Physical Pendulum
A rod oscillates as a physical pendulum. The period is measured directly by the Rotary Motion Sensor, and the value is compared to the theoretical period calculated from the dimensions of the pendulum.
Oscillation of Cart and Spring
For a spring and cart system, the effect on the period is investigated when changing the spring constant, amplitude of the oscillation, and the mass of the cart.
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...
Rotational Inertia
The purpose of this experiment is to find the rotational inertia of a ring and a disk experimentally and to verify that these values correspond to the calculated theoretical values.
Conservation of Angular Momentum
A non-rotating ring is dropped onto a rotating disk. The angular speed is measured immediately before the drop and after the ring stops sliding on the disk. The measurements are repeated with a non-rotating disk being dropped...
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.
Large Amplitude Pendulum
Explore the oscillatory motion of a physical pendulum for both small and large amplitudes and discover the dependence of the period of a pendulum on its amplitude. Waveforms are examined for angular displacement, velocity and...
Ballistic Pendulum
A Ballistic Pendulum is used to determine the muzzle velocity of a ball shot out of a Projectile Launcher. The laws of conservation of momentum and conservation of energy are used to derive the equation for the muzzle velocity.
Rotational Kinetic Energy
This lab investigates the potential energies for a modified Atwood's Machine, where a disk has been added to the Rotary Motion Sensor pulley.
Conservation of Energy of a Simple Pendulum
When a pendulum swings, potential energy is transformed into kinetic energy, and then back again to potential energy as the speed and elevation of the pendulum vary during the motion. The motion is measured using a Rotary Motion...
Rotational Dynamics
In this lab, students use rotary motion sensors to determine the mathematical relationship between torque, rotational inertia, and angular acceleration of a rotating object.
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...
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 |