題組內容

3. (25%) As shown in the figure below, a two-dimensional (2D) water jet with a velocity V and width h is impinging on a block on a sloping wall with an angle of inclination θsuch that the block does not move. The weight of the block is mg. Assume that the block is so small that the gravitational force acting on the jet stream and the resulting torque on the block are negligible. Neglect the flow viscosity.

(2) (5%) If there is no friction between the block and the sloping wall, what are the water depths at the lower (h₁) and upper (h₂) ends of the jet stream on the block?

題組內容

(2) (5%) If there is no friction between the block and the sloping wall, what are the water depths at the lower (h1) and upper (h2) ends of the jet stream on the block?

其他申論題

(2) (5%) If there is no friction between the block and the sloping wall, what are the water depths at the lower (h₁) and upper (h₂) ends of the jet stream on the block?