Specific weight/unit weight/weighty density(¥)##fluid property##episode-7##theory with video explianation

                  Fluid property
*Specific weight/unit weight/weighty density(¥)

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√unit weight is define as the           weight  by  volume.

             unit weight(¥)=W/V

√unit system

   S.I unit=N/m3

   C.G.S unit=dyne/cm3

   (1N=105 dyne)

√ relation between density and         unit weight

            ¥=W/V=mg/v=¶g

   ¥=¶g( density× gravity)

Q. unit weight of water

     a)9.81 KN/m3

     b)981 KN/m3

     c)1000 KN/m3

     d)100 KN/m3

 ANS=(a) 9.81 KN/m3

  Solution,

            ¥=¶g( density× gravity)

              =1000×9.81=9810 N/m3

              =9.81KN/m3

 Q. Determine the following                  parameter specific gravity 0.9        of the liquid this liquid present in the cylindrical vessel having      diameter 10 centimetre liquid height 30 centimetre.

a) density

b)Specific volume

c) unit Weight

d) mass

e) Weight

ANS=a) density=900 kg/m3

b)Specific volume=1.23×10-3 m3/kg

c) unit Weight=8829 N/m3

d) mass=2.115 kg

e) Weight=20.6991 N