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Discover Rotation Platform

Model No. ME-6834

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Introduction

PASCO’s Discover Rotation Platform is designed to help students 
learn the basics of rotational motion and inertia by experiencing 
motion themselves.  The platform features a stool that can be placed on 
the platform for rotational studies with the student sitting.  In addition, 
the stool can be removed, and students can sit or lay directly on the 
platform.
The Accessory Photogate (ME-9420B) or Photogate Head (ME-
9498A) can be used to instrument the Discover Rotation Platform for 
measurements of position, velocity, and acceleration.  These 
measurements can be made in both linear and rotational units. The 
photogate must be connected to a Smart Timer (ME-9830), 
ScienceWorkshop 500/750 interface, or the PASPORT Photogate Port 
(PS-2123) to obtain the above kinematics measurements.

Basic Operating Procedure

Rotating on the Stool

By placing the included stool over the 
platform, students can investigate the basics 
of rotational motion. 

1.

 Slide the stool over the platform.

2.

 Fit each leg into a groove on the upper 

platform.

Note: 

The bottom of each leg has a 19 mm 

clearance from the ground, so remove 
objects that might interfere with the 
operation of the stool.  

For optimal 

performance, keep the stool on a hard floor.  
The stool may not rotate on carpeting.

3.

 To rotate, place feet on the foot rungs or extend them out from the 

stool (See Figure 1).

Figure 1

Warning: 

Always 

remove any objects that 
might interfere with the 
rotation of the stool.  
Placing objects 
underneath the 
platform could damage 
the platform or cause 
injury.  

Summary of Contents for ME-6834

Page 1: ...Instruction Manual Manual No 012 07923B Discover Rotation Platform Model No ME 6834 ...

Page 2: ......

Page 3: ...n 2 Basic Operating Procedure 2 Rotating on the Stool 2 Sitting or Laying on the Platform 3 Accelerating the Platform with a Rope 3 Attaching a Photogate for Motion Measurements 4 Suggested Experiments 5 Moment of Inertia Experiments 5 Torque Experiments 5 Appendix A Technical Suppport 6 ...

Page 4: ...ual 012 07923 Additional Equipment Suggested for experiments Replacement Model Number PASCO interface 500 750 SCSI or USB USB link Xplorer PowerLink or Smart Timer CI 6400 or CI 6450 or CI 7650 or PS 2100 or PS 2000 or PS 2001 or ME 8930 Accessory Photogate ME 9204B Photogate Head ME 9498A Smart Timer ME 8930 Photogate Port for use with a USB link PowerLink or Xplorer PS 2123A Force Sensor Science...

Page 5: ...ted to a Smart Timer ME 9830 ScienceWorkshop 500 750 interface or the PASPORT Photogate Port PS 2123 to obtain the above kinematics measurements Basic Operating Procedure Rotating on the Stool By placing the included stool over the platform students can investigate the basics of rotational motion 1 Slide the stool over the platform 2 Fit each leg into a groove on the upper platform Note The bottom...

Page 6: ... rotation torque This is very useful when using the expression to investigate rotational motion 1 Slip one end of the rope between the foot rung and the upper platform then wind the desired length of rope in the groove see Figures 3a and 3b below 2 Be sure to pull the rope free when finished applying the torque to the platform Note It is best to use rope that has minimal stretch A great way to mea...

Page 7: ...e Head to the bracket on the bottom platform See Figures 5a and 5b 2 Connect the photogate to an interface such as a 500 or 750 ScienceWorkshop interface OR Connect the PASPORT Photogate Port PS 2123 to a USB Link or Xplorer 3 Students can now measure position velocity and acceleration of the platform and its rider from both linear and rotational frames of reference Figure 4 Figure 5a Figure 5b Wa...

Page 8: ...ard the center axis of rotation 5 Use a photogate to provide quantitative measurements of position velocity and acceleration Using the expression students can relate the angular acceleration that results when the masses are moved inward to a decrease in the moment of inertia of the system Torque Experiments By applying different torques to the platform and using the photogate to measure the angula...

Page 9: ...tical axis and angular acceleration on the horizontal axis will produce a slope equal to the moment of inertia for the system 7 The experiment could then be repeated with the mass of the system distributed in a different fashion For instance the student could be tucked in while rotating on the platform in the first experiment and have arms extended in the second experiment Technical Support For as...

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