Physics
A body experiences an upthrust F1 in river water and F2 in sea water when dipped up to the same level. Which is more F1 or F2 ? Give reason.
Answer
The upthrust in sea water (F2) is more than the upthrust in river water (F1). Hence, F2 > F1.
As we know that the sea water is denser than river water, and if the density of the liquid is more it exerts more buoyant force. Hence, the body in sea water will experience more upthrust than in river water.
Related Questions
Define upthrust and state it's S.I. unit.
Why is a force needed to keep a block of wood inside water?
A body of volume V and density ρ is kept completely immersed in a liquid of density ρL . If g is the acceleration due to gravity, write expressions for the following —
(i) The weight of the body,
(ii) The upthrust on the body,
(iii) The apparent weight of the body in liquid,
(iv) The loss in weight of the body.
Complete the following sentences:
Two balls, one of iron and the other of aluminum experience the same upthrust when dipped completely in water if ………. .