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Surface Tension (in Hindi)
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This lesson throws light on surface tension (in Hindi)

Harshit Aggarwal
Cleared UPSC ESE twice with Rank 63 and 90 in mechanical engg. Got 99 percentile in GATE. Cracked ONGC, BHEL,ISRO, SAIL, GAIL successfully

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  1. COURSE: UNDERSTANDING FLUID MECHANICS WITH QUESTIONS-() LESSON : SURFACE TENSION


  2. ABOUT ME Graduated from NIT Nagpur in 2008 Cleared Engineering Services Examination (ESE-UPSC) Exam Got the offer letter from most of the Maharatna and Navratna Companies Cleared GATE Exam Rate, Review, Recommend, Share Follow me on Unacademy at: https://unacademy.in/user/harshit aggarwal


  3. SURFACE ENERGY OF FLUIDS OR SURFACE TENSION All the fluids in nature made from tiny molecules and the surface of the fluids exhibits a tensile force in energy form which makes the fluid to hold other matter easily.This is due to forces of molecules (cohesive forces and adhesive forces) - - Cohesive forces are those forces caused between own molecules attraction.E.g. mercury liquid Adhesive forces are those forces which are attraction between 2 different matter molecules. Surface tension of liquids> Surface tension of gases It is represented by 0. -


  4. SURFACE ENERGY OF FLUIDS OR SURFACE TENSION Forsce CF) unit length surfare a6liquid units of surfate tenson rM Sec Unit MLT-2 ha er-Nr. 0-613N erty pos osses Joules Tuer 0.944 unit suface Area M: 6670 M2 unit tength D


  5. SURFACE TENSION IN LIQUID DROPLET p : Diff in Press re a Liquid er eated CNI ess uTe Droplet a Liquid Pressure exerted by fluid due to surface tension unit length P: force 2 4t


  6. SURFACE TENSION IN BUBBLE f: 4D2 Gas For Liquid Bubble drapleb


  7. JET OF LIQUID Prescure aifferente Cap) F rea unit lengMh L> D DROPLET 2


  8. QUESTION sinfoe 1ension af .kr th arr katace is o 013 Nlm. 1heGouge,pret sure inside a roir droplet of diameter immm uill be.


  9. SOLUTION 0073 to-3 292 N/m2


  10. QUESTION A coate Jet issued fom a nozzle of diameter olmm and langth es mm tu surface Tecicn ab water with air in evfatef O.OFSN- chat is he Pressure inaide the jet abave the atmespheve n re ssure tnside


  11. THANK YOU