Elasticity and Fluid Machanics-09-SOLUTION-I

1. = 1.8. 2. mm. . 3. N/m2 Pa. 4. N. 5. N/m2. 6. N/m. 7. Pa Excess press Pa. 8. N. 9. N/m2 N/m2 N/m2 Force = 56 N. 10. . 11. cm. 12. (a) Case I Absolute Pressure = 76 cm of Hg + 20 cm to Hg = 96 cm to Hg Gauge Pressure = 20 cm of Hg Case II Absolute Pressure =76 cm of Hg – 18 cm of Hg = 58 cm of Hg Gauge Pressure = – 18 cm of Hg (b) cm of Hg + (left side) cm. 13. (a) (b) Spring balance roads = 10.5 kg. 14. m. 15. mm. 1. N. 2. = 0.2 m = 20 cm. 3. m. 4. . 5. (a) (b) (c) in free fall 6. Weight in liquid . 7. m. Displacement of m m. Displacement of m m. m Displacement of m. 8. . 9. , Concave towards smaller bubble. 11. . 1. Required be mm. 2. Given elongation in the considered element (spain) . 3. m. 4. Pressure just below the meniscus Pressure just above the meniscus radius of capillary Surface tension of liquid Applying Boyle’s law = 1 cm. 5. m m 6. . 7. (a) (c) . 8. Reaction force on tube at bend point is Moment of force about is . 10. .

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