Surface Tension SK046/SK047
Exp-1 To determine the surface tension of water by ring-pull out method.
- Modular approach.
- Data-logging interface.
- Precision dynamometer.
- Aluminum ring.
- Force sensor.
- Surface tension.
- Ring pull out method.
- force sensor
- data-logging
- Tensile force.
- Limiting force.
Principle and Working:
Surface tension for water is determined using ring-pull out method. The experiment utilizes a force sensor on which a metal ring is suspended, which can be lowered or pulled out of water.
In the present setup, a metal ring is completely immersed in the liquid, so that the entire surface is wetted. The ring is than slowly pulled out of the liquid, drawing a thin sheet of liquid behind it. The liquid sheet tears when the tensile force exceeds a limit value,
F=σ 4πR,
where R denotes edge radius and σ surface tension of liquid.
A force sensor is used with computer interface to determine the tensile force in SK047 kit.
Contents:
| Cat. No. | Item Name | SK046 | SK047 |
| SW979 | Laboratory jack | 1 | 1 |
| SG101 | ‘A’ shaped base, small | 1 | 1 |
| SH323 | Rod, 75cm | 1 | 1 |
| CB208 | Bosshead | 1 | 1 |
| Data Logging Interface | 1 | ||
| Force sensor | 1 | ||
| Software | 1 | ||
| C7486 | Ring | 1 | 1 |
| SC227 | Beaker | 1 | 1 |
| R5023 | Vernier caliper | 1 | 1 |
| U20030 | Precision dynamometer | 1 |
- Data Logging Interface
- 'A' Shaped Base SG101
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SPECIFICATIONS Mount : Support rod upto 8-14mm.
Material : Cast iron
Length : 200mm
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- Force Sensor
- Laboratory Jack SW979
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SPECIFICATIONS Material : Aluminium
Top plate size : 160x130mm
Static Loading : 10kg
Vertical Elevation : 65 to 260mm
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- Vernier Caliper R5023
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SPECIFICATIONS Material : Steel
Type : Ground jaws and slides
Internal measurement : 150mm x 0.02mm or 6" x 0.001"
External measurement : 150mm x 0.02mm or 6" x 0.001"
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- Ring C7486
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SPECIFICATIONS Material : Aluminium
Diameter : 60mm approx.
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- Precision Dynamometer 0.1N U20030
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SPECIFICATIONS Housing : Transparent Plastic
Calibration :Zero point
Protection : Against over extension
Precision : < 1% of total measuring range
Scale division : 1% of total measuring 0.1N
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- Beaker SC227
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SPECIFICATIONS Material : Borosilicate glass
Graduation : 50ml interval
Volume : 250ml
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- Rod SH323
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SPECIFICATIONS Length : 750mm
Diameter : 12.5mm
Material : Mild Steel
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* Additionally Required
Computer not supplied with this setup.
Mechanics Experiments
- Free Fall Apparatus
- Variable 'g' Pendulum
- Centripetal Force & Moment of Inertia
- Projectile Motion Experiment
- Timing Car
- Timing Ball
- Linear Air Track with Digital Timer
- Linear Air Track with Data Logging
- Law of motion Kit
- Coupled Pendulum Oscillations
- Surface Tension
- Viscosity of Glycerine
- Forced Oscillators & Resonance
- Computerized Cavendish Balance (Imported)
- Gravitational Balance (Imported)
- Elastic & Plastic Deformation