Sensors

Experiment

LoggerPro3 file(s) in

“Probes & Sensors” folder

Sensor

 

Unit I – Scientific Thinking in Experimental Settings

Factors Affecting the Period of a Pendulum

(length, amplitude, and mass vs period)

 

Photogates>Pendulum Timer

Single channel photogate Pendulum Timing. Place a photogate at the bottom of the pendulum swing. Connect a Vernier Photogate on DIG/SONIC 1.  Reported periods are from blocking to the second following blocking by the pendulum bob.

 


photogate

 

Unit II – Particle Moving with Constant Velocity

MBL Exercises
"Graph Matching" (LabQuest Version, LabPro & Computer Version)

(matching position vs time, velocity vs time and written descriptions of motion with actual motion of a person)

 

 

Motion Detector>Motion Detector

Motion Detector>Position Match 1

Motion Detector>Velocity Match


motion detector

 

 

Unit III – Uniformly Accelerating Particle Model

Motion on an Inclined Plane

(displacement, velocity and acceleration vs time)

 

Photogates>Pulse Timer – Two Gates

This file uses two photogates to determine the time it takes an object to go from gate 1 to gate 2.


two photogates

 

dynamics system

 

 

Unit III – Uniformly Accelerating Particle Model

Finding the Acceleration of Gravity

(use method and equipment of choice to determine a numerical value for g)
"Picket Fence Free Fall" (LabQuest Version, LabPro & Computer Version

 

Photogates>Motion Timer Picket Fence

 

Photogates>Pulley

This file is setup to collect data as a Smart Pulley rotates. The distance traveled for each spoke of the Smart Pulley is assumed to be 0.015 meters which is the proper distance if you are using a string in the groove of the pulley.

 

Motion Detector>Motion Detector

 

 


photogate

picket fence

 

smart pulley

motion detector

 

 

Unit IV – Free Particle Model, Inertia and Interactions

Newton's 1st Law

(design an experiment to verify Newton’s First Law)

 

Photogates>Two Gate Timer

This file is set up for studying velocities using two photogates. Velocities are calculated assuming that the object blocking the photogate has a length specified under Setup/Data Collection/Sampling.

 

Photogates>Gate and Pulse Timer

Two photogate acceleration measurement. Average block to unblock velocities in each gate are determined, along with the midpoint time for each gate block to unblock time interval.

 

Photogates>Motion Timer Pckt Fnc-spl

This file is for studying free fall with a photogate and a Picket Fence. It does the simple calculations of 0.05 m/ delta t to get the velocities. These are plotted vs the mid times of the intervals. If you need to change the distance between bars on the Picket Fence, you need to change the definition of the Velocity column.

 

Motion Detector>Motion Detector

 


two photogates

 

dynamics system

 

motion detector

 

 

Unit IV – Free Particle Model, Inertia and Interactions

Newton's 3rd Law

(predict and verify various force interactions between two objects for different kinds of motion)

 

Force Sensors>Dual-Range>2 – 10N Dual Range

Force Sensors>Dual-Range>2 – 50N Dual Range


two force sensors

 


friction pad

 

 

Unit V – Constant Force Particle Model

Atwood or Modified Atwood Machine Lab

(acceleration vs total mass and net force)

 

online version

 

 

 

 

Photogates>Pulley

This file is setup to collect data such as acceleration as a Smart Pulley rotates. The distance traveled for each spoke of the Smart Pulley is assumed to be 0.015 meters which is the proper distance if you are using a string in the groove of the pulley.

 


photogate

 

smart pulley


 

 

Unit V – Constant Force Particle Model

Further investigations with forces and Newton's 2nd law may be done with the dynamics system. Friction can be added to the carts with a friction pad. A constant force may be applied to the cart with a cart fan.

 

 

Depends on experiment being conducting.

 



cart fan



friction pad

 

 

Unit VI – 2-D Particle Models

Projectile Motion

(horizontal displacement vs horizontal velocity and vertical drop height)

 

 

Photogates>Daisy-Chained Photogates

Use this file if you have several equally-spaced Vernier Photogates connected to DIG/SONIC 1. To specify the separation between the photogates, choose Set Up Sensors then LabPro: from the Experiment menu, click on photogate icon in DIG/SONIC 1. Choose Set Distance or Length.

 


two photogates

 

 

Unit VI – 2-D Particle Models

Basketball Throw - sample of student work

 

Sample Movies>Basketball Shot>Basketball Shot

This is a pre-done movie.  With the camera, you can take your own movie to use in this lab.

 


Logitech QuickCam Pro 5000

 

 

Unit VII – Energy (with less work)

Spring has Sprung

(change in its length vs force applied to a spring)

 

 

Force Sensors>Dual-Range>10N Dual Range

Force Sensors>Dual-Range>50N Dual Range


force sensor

 

 

Unit VIII – Central Force Particle Model
Lab 20 - Centripetal Acceleration on a Turntable

 

 

Physics with Vernier>20a Centripetal Acceleration


low g accelerometer

low g accelerometer

 

 

Unit IX – Impulsive Force Particle Model

Lab 18 - Momentum, Energy & Collisions

 

 

Physics with Vernier>18 Momentum Energy


dynamics system

 

2 motion detectors

 

 

Unit IX – Impulsive Force Particle Model
Lab 19 - Impulse and Momentum

 

 

Physics with Vernier>19 Impulse and Momentum


dynamics system

 

motion detector

 

force sensor

force sensor

 

 

Midterm Exam

Academic Physics Midterm Exam Review

Academic Physics Midterm Prelab

 

Voltage Probes>Differential Voltage Probe

 

 

 

 

 

 

 

Current Probes>Current Probe

 

voltage probe

 

current probe

 

 

Independent Studies & Investigations

 

(including final exam at Funtown USA)

 

 

Depends on experiment being conducting.  Here are some descriptions of the sensors/equipment:

 

Microphone can be used to display and study the waveforms of sounds from voices and musical instruments. It is also great for speed of sound experiments.

 

Light Sensor approximates the human eye in spectral response and can be used over three different illumination ranges, which you select with a switch. Use it for inverse square law experiments or for studying polarizers, reflectivity, or solar energy.


Vernier Photogate may be used with a laser pointer as a laser gate when larger gate openings are needed.

 

Wireless Dynamics Sensor System combines a 3-axis accelerometer, altimeter, and force sensor into one unit that communicates wirelessly with your computer using Bluetooth. Great for use at amusement parks and with the dynamics system (ramps and cart),

 

Data Vest makes hands-free data collection at an amusement park or playground easy. The vest has a front pouch for the LabPro, CBL 2, or Wireless Dynamics Sensor System.

 

 

 

 

microphone

 

 

 

light sensor

 

 

photogate with laser pointer



wireless dynamics sensor system



data vest

 

Chemistry Experiments (these items have been moved to C106)

 

 

Depends on experiment being conducting.  Here are some descriptions of the sensors:

 

Gas Pressure Sensor has enough resolution and range to work for all subject areas. Chemistry teachers will find that it has enough range for Boyle's law experiments (0 to 2.1 atm), yet provides greatly improved resolution for vapor pressure or pressure-temperature experiments (0.40 mm Hg with LabPro). The connection valve is now directly on the sensor box, significantly reducing dead air space. For biology teachers, the package includes airtight tubing clamps for transpiration experiments, as well as special fittings for respiration experiments in small containers.

 

The rugged and durable temperature probe has a sealed stainless steel shaft and tip that can be used in organic liquids, salt solutions, acids, and bases. This probe is the same as the probe shipped with CBL 2™.

 

Plug Go!Temp into your Windows® or Macintosh® computer, start the free Logger Lite™ software, and click "Collect" to see the temperature graph plotted in real time!

 

Conductivity Probe is great for environmental testing for salinity, total dissolved solids (TDS), or conductivity in water samples. Biology teachers can use this probe to demonstrate diffusion of ions through membranes or to monitor changes in ion levels in aquatic systems. Chemistry students can use it to investigate the difference between ionic and molecular compounds, strong and weak acids, or ionic compounds that yield different ratios of ions. The Conductivity Probe can monitor concentration or conductivity at three different sensitivity settings.

 

 

 

 

 

 

gas pressure sensor

 

 

 

 

 

 

temperature probe

 

 

Go-temp

 

 

conductivity probe