On the Lady Rose we did a crude experiment to see how the drag force on a fishing line varied with the length of line in the water (assuming the boat kept moving at constant speed, which it pretty well did). With different lengths of line in the water the drag force was measured by seeing how much it stretched a long elastic shock cord. After correcting for the length of line not actually in the water etc., the following results were obtained:
Length of Line in Water [ft] |
Stretch of Shock Cord [in] |
(4 Edition) problems 8, 47, 65 and 95
. . . and Tipler Ch. 5:
(4 Edition) problems 13, 40, 57, 66 and 84