Part A Calculate the tension in a vertical strand of spider web if a spider of m

Question

Part A Calculate the tension in a vertical strand of spider web if a spider of mass 7.30x10-5 kg hangs motionless on it. Submit Answer Tries 0/10 Part B Calculate the tension in a horizontal strand of spider web if the same spider sits motionless in the middle of web as shown in Figure below. The strand sags at an angle of = 13.3° below the horizontal. Compare this with the tension in the vertical strand, i.e., find their ratio of the tension to the tension in the previous part. Tension Ratio Submit Answer Tries 0/10

Explanation / Answer

A) T = mg = 7.3*10^-5kg * 9.8m/s² = 7.154*10^-4 N

(B) Consider the two sides of the strand: the horizontal components must be equal and opposite, and the vertical components must sum to the weight. Then
(vertically) 2*T*sin = mg
2 * T * sin13.3º = 7.154*10^-4 N
T = 1.554*10^-3 N

The ratio horizontal / vertical = 2.17 / 1

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