Q1..... When equal vol..... Each metal. Ttvmonometershown in the fig. of relative density or spec
the absolute pressure in the bulb if the atmospheric pressure is 100 kPa.
Startirv from point A the manometetric equation may
be written as
= 105
A gas
PA — =
PA - (3.4 x 103) + (100 x IF) = 103.4kPa
Note : The variation of pressure in the gas is ingnored
because the density of gas is negligible compared to that
Of the liquid.
BEGINNER'S BOX-I
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6.
WTvnequal of two metals ate mixed together, the density of mixture is 4 kg/m . When equal
the sarne two metals ate mixed together, the mixture density is 3 kg/m . Calculate the densities Of each
In an e.xpetiment the weight of 2.5 mg o? a certain liquid was found to be 18.75 kN. Then find the specific
of liquid.
A of 4 m3 volume contains an oil which weight 30.2 kN. Determine the specific gravity Of the Oil.
A mercury barometer wads 75 cm in a stationary' lift. What reading does it show when the lift is movir8
downwards, with an acceleration of 1 m/s2 ?
Ttw diameter of the piston P2 is 50 cm and that Of the piston Pl is 10 cm. What is the force exerted on P2
a force of I N is applied on Pl ?
The area of cross-section of wider tube is 800 cm . If a mass of 16 kg is placed on the massless piston, find
difference in the level of water in the two tubes.
bot
6
7. AnopenU-tubeofuniform contains mercury. When 27.2 cm of
water column