A particle moves from point A = (0, 0, 0) to point B = (2π, 0,
2π), under the action of the force F = xi +
yj − zk .
a. Calculate the work done by the force F on
the particle if it moves along the conic-helical curve
r(t) = (t cost )i +
(t sint )j +
tk with 0 ≤ t ≤ 2π.
b. Find a parametric vector equation for the straight line
connecting A to...