Mechanical Prop...

Depth of sea is maximum at Mariana Trench in West Pacific Ocean. Trench has maximum depth of about $$11km$$. At bottom of trench water column above it exerts $$1000$$ atm pressure. Percentage change in density of sea water at such depth will be around
(Given, $$B=2\times {10}^{9}N{m}^{-2}$$ and $${p}_{atm}=1\times {10}^{5}N{m}^{-2}$$)

A $$20$$cm long capillary tube is dipped in water. The water rises up to $$8$$cm. If the entire arrangement is put in a freely falling elevator, the length of water column in the capillary tube will be:

Water rises in a vertical capillary tube up to a length of $$10$$cm. If the tube is inclined at $$45^o$$, the length of water risen in the tube will be:

A vertical tank, open at the top, is filled with a liquid and rests on a smooth horizontal surface. A small hole is opened at the center of one side of the tank. The area of a cross-section of the tank is $$N$$ times the area of the hole, where $$N$$ is a large number. Neglect mass of the tank itself. The initial acceleration of the tank is:

The pressure of water in a water pipe when tap is opened and closed in respectively $$3\times 10^{5}N/m^{2}$$ and $$3.5\times 10^{5} N/m^{2}$$. Determine the velocity of flow when tap is open?

A ball of mass $$m$$ and radius $$r$$ is released in viscous liquid. The value of its terminal velocity is proportional to

The two femurs each of the cross-sectional area 10 cm$$^2$$ support the upper part of a human body of mass 40 kg. The average pressure sustained by the femurs is then (Takes g= 10 m s$$^{-2}$$)

Two syringes of different cross section (without needle) filled with water are connected with a tightly fitted rubber tube filled with water. Diameters of the smaller piston and larger piston are 1 cm and 3 cm respectively. If a force of 10 N is applied to the smaller piston then the force exerted on the larger piston is

When the flow parameters of any given instant remain same at every point, then flow is said to be

A sealed tank contains water to a height of 11 m and air at 3 atm. Water  flower out from the bottom of a tank through a small hole. The velocity of efflux is (g=$$10{ ms }^{ -2 }$$)