-
The water jet exiting from a stationary tank through a circular opening of diameter 300 mm impinges on a rigid wall as shown in the figure. Neglect all minor losses and assume the water level in the tank to remain constant. The net horizontal force experienced by the wall is ____ kN. Density of water is 1000 kg/m3. Acceleration due to gravity g = 10 m/s².
-
- 8.76 N
- 7.76 N
- 9.76 N
- 5.76 N
Correct Option: A
Force exerted by a jet of water striking fixed wall = ρav²
| = 1000 × | × 0.3² × V² | 4 |
| = 1000 × | × 0.3² × (2 × 10 × 6²) [∵ V = √2gh] | 4 |
= 8.76 N
