Question
(a) Calculate the tension in a vertical strand of spider web if a spider of mass $8.00 \times 10^{-5} \textrm{ kg}$ hangs motionless on it. (b) Calculate the tension in a horizontal strand of spider web if the same spider sits motionless in the middle of it much like the tightrope walker in Figure 4.17. The strand sags at an angle of $12^\circ$ below the horizontal. Compare this with the tension in the vertical strand (find their ratio).

a) $7.84 \times 10^{-4} \textrm{ N}$

b) $1.89 \times 10^{-3} \textrm{ N}$, which is 2.4 times the tension in the vertical strand.

Solution Video