Mechanical Properties of Fluids Set 1

A log of wood of mass floats in water. The weight that can be put on raft to make it just sink, should be (density of wood )

The excess pressure inside one soap bubble is three times that inside a second soap bubble, then the ratio of their surface areas is

A streamline body with relative density falls into air from a height on the surface of a liquid of relative density, where. The time of immersion of the body into the liquid will be

A body floats in water with one-third of its volume above the surface of water. If it is placed in oil, it floats with half of its volume above the surface of the oil. The specific gravity of the oil is

A capillary tube of radius and length is connected in series with another tube of radius and length. If the pressure difference across the two tubes taken together is , then the ratio of pressure difference across the first tube to that across the second tube is

A soap bubble in air (two surface) has surface tension . Find the gauge pressure inside a bubble of diameter 30 mm.

The total weight of a piece of wood is 6 kg. In the floating state in water its part remains inside the water. On this floating solid, what maximum weight is to be put such that the whole of the piece of wood is to be drowned in the water?>

Water falls from a tap , down the streamline

A vessel of area of cross-section has liquid to a height . There is a hole at the bottom of vessel having area of cross-section . The time taken to decrease the level from to will be

A cylinder is filled with liquid of density upto a height . If the cylinder is at rest, then the mean pressure of the walls is