Question 1
Find the point on the curve
r(t) = (5 sin t)
i + (5 cos t)
j + 12t
k at a distance 26π units along the curve from the point (0, 5, 0) when t > 0 corresponds to the direction of increasing arc length.
◦ (0, 5, 26π)
◦ (-5, 0, 2π)
◦ (5, 0, 12π)
◦ (5, 0,12π)
◦ (0, 5, 24π)
Question 2
Find the radius of curvature of
r =
.
◦
2◦
2◦
2◦
2◦
2