IIT JEE , AIEEE Forum - Physics , Mechanics

phyana

2nd quest

6(pie)(eta)R.V = 4/3 (pie)(R^3) * (sigma-raw) * g

v prop. to R^2
radius of ball 1 -r
radius of ball 2 - 2r

hope u can now relate ......................

1st quet

(Area of A)(velocity at A) = (area of B)(velocity of B)

area =(pie)R^2

thus u get the velocity at B

is the water circulating in circles...............without that we cannot say its angular velocity .we can say that it would proprotioinal to the velocity at at that point

3rd quest

reynolds number is given by = (raw)(density)terminal velocity)/((eta))

subsitiute to get the answer

4 th quest
6(pie)(eta)R.v = mg

thus u get the answeer

plz rate me........anyway all my exams are over..........i feel to pass my time solving ur problems

Ask & Discuss Questions with Community & Experts