AP EAMCET Engineering 23 Sep 2020 Shift 1 Paper

The thrust acting on the circular discs is dependent on the area covered by the circular disc and the density of the fluid. In this case, the radii of the two circular discs are given as 2cm and 4cm and density of the liquid remains the same.
The area covered is given by πr2.
So, ratio of their thrust, ‌

TA

TB

=(‌

rA

rB

)2
=(‌

2

4

)2=‌

1

4