- #1

Punkyc7

- 420

- 0

W=FD

V=integral of surface area * height

F= rho *V

V is the integral of pi(r-x)^2 from 0-1

D=2-x

so W=rho*V int 2-x from 0-1

i get 7pi rho g/2 and the answer is suppose to be 9 rho pi/4

im not sure where i am going rong but i thing it has to do with my integration

we haven't done parametrics yet