If a small ping pong ball is placed in a vertical jet of water or air, it will rise to a certain geight above the nozzle and will be spinning there.

A ball of weight W is supported on a vertical jet of water. If the stream of water flowing from the nozzle has a diameter D and velocity u , determine the value of H . Assume that no loss of energy takes place.

A glass capillary tube of radius r is placed vertically touching the surface of water. The water rises to height h in capillary tube. If now the tube is dipped into water till only h/2 length of it is outside the water surface the , radius of curvature of the meniscus of water in capillary tube will be,

A ping-pong ball of mass m is floating in air by a jet of water emerging out of a nozzle. If the water strikes the ping-pong ball with a speed v and just after collision water falls dead, the mass flow rate of water in the nozzle is equal to :

A ping-pong ball of mass m is floating in air by a jet of water emerging out of a nozzle. If the water strikes the ping-gong ball with a speed v and just after collision water falls dead, the rate of flow of water in the nozzle is equal to

If two ping-pong balls are suspended near each other and a fast stream of air is produced in the space between the balls, then the ball

A rectangular tank is placed on a horizontal ground and is filled with water to a height H above the base. A small hole is made on one vertical side at a depth D below the level of the water in the tank. The distance x from the bottom of the tank at which the water jet from the tank will hit the ground is