1. The problem statement, all variables and given/known data An object weighing 1.2 pounds travels along a helix given by x=cost, y=sint, z=4t, 0<=t<=8pi. Find the work done by the object. Let's keep this in ft. 2. Relevant equations g=32.174 ft/s2 f=m*g f=w*d 3. The attempt at a solution r(t)=cos(t)i+sin(t)j+4(t)k I know I need an F function, but I'm not sure how to find it. w=[tex]\int[/tex] F(dot)dr w=[tex]\int[/tex]F(r(t)) (dot) r'(t) dt Any help would be appreciated, thanks in advance!