Fluid Drag Ball
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 FT6691AH Pro Camera Tripod Action Fluid Drag Ball head $24.98 Time Remaining: 28d 17h 21m Buy It Now for only: $24.98 |
 dmk2 PRO Action Fluid Drag Ball Head 6665 $43.99 Time Remaining: 2d 19h 54m |
 FT6664H Pro Camera Tripod Action Fluid Drag Ball Head $49.98 Time Remaining: 2d 16h 6m Buy It Now for only: $49.98 |
 FT6691AH Pro Camera Tripod Action Fluid Drag Ball head Load3Kg 66Lb $24.98 Time Remaining: 25d 17h 43m Buy It Now for only: $24.98 |
 DMK PRO Action Fluid Drag Ball Head 6665 $66.49 Time Remaining: 2d 8h 6m Buy It Now for only: $66.49 |
 FT6691AH Pro Camera Tripod Action Fluid Drag Ball head Maxload 3Kg 66Lb $24.98 Time Remaining: 15d 17h 43m Buy It Now for only: $24.98 |
 FT6691AH Pro Studio Tripod Action Fluid Drag Ball head Load3Kg 66Lb $24.98 Time Remaining: 27d 17h 43m Buy It Now for only: $24.98 |
 FT6691AH Pro Photo Tripod Action Fluid Drag Ball head Load3Kg 66Lb $24.98 Time Remaining: 1d 17h 43m Buy It Now for only: $24.98 |
 FT6691AH Camera Tripod Action Fluid Drag Ball head Maxload 3Kg 66Lb $24.98 Time Remaining: 5d 17h 43m Buy It Now for only: $24.98 |
 FT6691AH Pro Photo Video Studio Tripod Action Fluid Drag Ball head Load3Kg 66Lb $24.98 Time Remaining: 3d 17h 43m Buy It Now for only: $24.98 |
 FT6691AH Pro Photo Studio Tripod Action Fluid Drag Ball head Load3Kg 66Lb $24.98 Time Remaining: 29d 17h 43m Buy It Now for only: $24.98 |
 FT6665H PRO Camera Tripod Action Fluid Drag Ball Head $59.98 Time Remaining: 28d 17h 31m Buy It Now for only: $59.98 |
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Ravelli AVT Professional 67" Video Camera Tripod with Fluid Drag Head List Price: $199.00 Sale Price: $73.99  |
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The Ravelli AVT is constructed of pressure treated aluminum and is unrivalled in stability. This tripod incorporates a unique center brace strut system, reliable quick-action leg locks, non-rollback center column, and rubberized feet with retractable metal spikes... |
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Ravelli AVTP Professional 55" 75mm Video Camera Tripod with Fluid Drag Head Sale Price: $149.89 Used From: $320.00 |
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The Ravelli AVTP is a complete Professional 75mm Video Tripod including legs, mid-level spreader, dual fluid head and carry bag. The legs are a 3-Segment Interlocking Crutch-Type design with a mid-level spreader providing oustanding stability for Video Cameras up to 27lbs... |
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DMKFoto Fancier 6664 PRO Action Fluid Drag Ball Head List Price: $79.99 Sale Price: $39.99 |
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The load capacity of the head is 11 lbs.Screw size: 1/4 inch for camera; 3/8 inch for tripods (we can provide adapter to fit 1/4 inch pods). The quick release plate system is universal, compatible to all major brands, including the most popular Manfrotto 3157N... |
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Pro Heavy Duty Ball Head Quick Release Photo Ball Head Tripod Grip Action Ball Head for Gitzo Manfroto by Fancier 6664H Sale Price: $49.99 |
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This is a high quality pro ball head with calibrated tension control for smooth precision movement. Independent control for pan and tilt movement. This ball head is made from the latest metal (aluminum alloy) technology that provides super strong and sturdy construction and yet weighs only 1-1/4 lbs... |
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DMKFoto Fancier 6665 PRO Action Fluid Drag Ball Head List Price: $99.99 Sale Price: $56.99 |
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This is a high quality pro ball head with calibrated tension control for smooth precision movement. Independent control for pan and tilt movement.This ball head is made from the latest metal (aluminum alloy) technology that provides super strong and sturdy construction and yet weighs only 1-3/4 lbs... |
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Fancier Tripod Dolly Video Tripod Dolly Heavy Duty Build With Carrying Case By Fancier FT600 Sale Price: $34.99 |
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Heavy duty professional quality. Unique, single action leg locks with adjustable cycolac grips that hold any and all type tripod legs regardless of configuration or style. Folds to a compact 18" for storage and transport... |
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ePhoto Professional Video Camera Fluid Drag Tripod Head by ePhoto INC 717AH Sale Price: $79.99 |
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Professional Video Camera Fluid Drag Tripod Head by ePhoto INC 717AH |
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Manfrotto 502 Video Head with 75mm Half Ball MVH502A List Price: $260.00 Sale Price: $224.89 Used From: $184.22 |
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This head is the perfect synthesis between and innovative "Bridge Architecture" and manfrotto's Cutting edge engineering. A pan fluid drag system gives more ergonomic operation while a wider top plate and longer sliding plate offer extra stability and balance... |
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Manfrotto 504HD Video Head (Black) Sale Price: $369.90 Used From: $315.91 |
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The 504HD offers a perfect balance between design and performance. The bridge design improves the head’s rigidity, and its PAN friction control is fast, simple to fine-tune and protected from knocks... |
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Manfrotto 504HD,546BK Video Tripod Kit with 504HD Head and 546 Tripod (Black) Sale Price: $799.89 |
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This kit is the perfect choice for all of your video applications. The 504HD offers a perfect balance between design and performance. The bridge design improves the head’s rigidity, and its PAN friction control is fast, simple to fine-tune and protected from knocks... |
Calculate the force req. to pull a copper bal of radius 2 cm up through a fluid at the constant speed of 9cm/s
Take the drag force to be proportional to the speed, with b=.95kg/s and the mass of the ball 300 grams. Explain.
this is a pretty simple question, just a plug and chug formula
http://hyperphysics.phy-astr.gsu.edu/Hbase/airfri2.html
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