AP EAMCET20226 Jul 2022Morning ShiftPhysicsMechanical Properties of FluidsActual
A cylindrical metal box whose flat surface has an area of 0.01 ~m ^2 rests on liquid of 0.3 ~mm thickness. If upon applying a horizontal force of magnitude 1 3 ~N , the box slides with a constant speed of 0.09 ~ms ⁻¹ , the coefficient of viscosity of the liquid is nearly
Options
- A2.5 10⁻² Pa.s
- B1.1 10⁻¹ Pa.s
- C1.1 10⁻² Pa.s
- D2.5 10⁻¹ ~Pa . s
Correct answer
B. 1.1 10⁻¹ Pa.s
Step-by-step solution
We know that F _ drag = A dv dx For metal box to be moving with constant velocity aligned & F _ drag = F & A dv dx = F & = F dx Adx = 1 3 0.3 10⁻³ 0.01 (0.09-0) & =1.1 PaS aligned