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Consider a cylindrical tank of radius 1 m is filled with water. The top surface of water is at 15 m from the bottom of the cylinder. There is a hole on the wall of cylinder at a height of 5 m from the bottom. A force of 5 × 10 5 N is applied an the top surface of water using a piston. The speed of ifflux from the hole will be: (given atmosphere pressure P A = 1.01 × 10 5 Pa, density of water ρ w = 1000 kg/m 3 and gravitational acceleration g = 10 m/s 2 ) 5 × 10 5 N 10 m 5 m 15 m

1. 11.6 m/s
2. 10.8 m/s
3. 17.8 m/s
4. 14.4 m/s

Correct answer: 17.8 m/s

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