Questions

# The tension in a string holding a solid block below the surface of a liquid (where ${\mathrm{d}}_{\mathrm{liquid}}>{\mathrm{d}}_{\mathrm{block}}$) as in shown in the figure is T when the system is at rest. Then what will be the tension in the string if the system has upward acceleration a?

## Remember concepts with our Masterclasses.

80k Users
60 mins Expert Faculty Ask Questions
a
T1−ag
b
T1+ag
c
Tag−1
d
agT

Check Your Performance Today with our Free Mock Tests used by Toppers!

detailed solution

Correct option is B

here buoyant force is greater than weight of the block  T=vdlg−vdsgWhen it moves up with acceleration ‘a’.T'=vdl−vdsg+a=vdl−vdsg1+ag=T1+ag

Similar Questions

Consider the following statements.
(A) A thin stainless steel needle can lay floating on a still water surface.
(B) Any object floats when the buoyancy force balances the weight of the object.

Select the correct option.
(a) (A) is false, But (B) is true.
(b) Both (A) and (B) are true.
(c) (A) is true, But (B) is false.
(d) Both (A) and (B) are false.