Fluids and SHM

Question 1

change in pressure for rotation

Answer 1

delta P = rho w^2 x^2 /2

Question 2

Change in pressure if there is acceleration

Answer 2

delta p = rho a x

Question 3

Fv in terms of velocity gradient

Answer 3

F = n A dv/dy

Question 4

Surface tension and temp

Answer 4

surface tension inversely to temp

Question 5

Viscosity and temp

Answer 5

Liquids: inversely
Gases: directly

Question 6

Relation between SI units and poise

Answer 6

10 poise = 1 SI unit

Question 7

delta P for bubble =

Answer 7

4S/R

Question 8

Rate of flow

Answer 8

pi r^4 (delta p)/ 8nl

Question 9

delta P for capillary

Answer 9

2Scos theta /R

Question 10

Surface energy =

Answer 10

S(surface area for drop)

2S(surface area) for bubble

Question 11

When 2 bubbles colaesce in vacuum r =?

Answer 11

root(r1^2 + r2^2)

Question 12

When two bubbles come in contact to form double bubble, r =?

Answer 12

1/r = 1/r1 - 1/r2

Question 13

Reynold’s number

Answer 13

rho v d/n

Question 14

Amplitude(when there is damping and ext driving force) =

Answer 14

F0/root( m^2 (w^2 - wd^2) + wd^2 b^2)

Question 15

Time period of physical pendulum

Answer 15

T = 2pi root(I/mgl)