- #1

bobblehead

## Homework Statement

## Homework Equations

τ= η* (dv/dy)

## The Attempt at a Solution

so

dA= 2π* r * dr

T = ∫ τ * r * dA

T = ∫((0.01* r* 2*π * 450 /60)/(5*10^-3) ) * r * 2π* r *dr

= (592.1762)*(r^4/4)

T = 0.11 Nm

is this correct?