An object weighs 30N in air and 21N in water. The weight of the object when completely immersed in a liquid of relative density 1.4 is

Bob_d_bob

1 year ago

Weight in Air: 30N
Upthrust in water: 30 - 21 = 9
Upthrust in Fluid
Relative Density= ----------------------------
Upthrust in water

Therefore Making the Upthrust in fluid the subject of the formula:
U.I.F= 9 x 1.4
>>>> 12.6

Then the weight of object in the substance can be found using>> Upthrust = Weight in Air - Weight in Substance

: 30 - 12.6 = 17.4N

Justcool

1 year ago

lol

Daniel1668

7 years ago

why are two past questions out there... one saying consolidated and the other cbt

OkoloChristabel

1 year ago

where did 103 come from??
This explanation is detailed 🙁