A tightrope walker with a mass of 60.0 kg stands at the center of ...

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A tightrope walker with a mass of 60.0 kg stands at the center of a rope which was initially strung horizontally between two poles. His weight causes the rope to sag symmetrically, making an angle of 4.80 with the horizontal.
 
  What is the tension in the rope? A) 359 N
  B) 589 N
  C) 1760 N
  D) 2470 N
  E) 3520 N

Question 2

The length of a telescope is 2.20 m and the focal length of the eyepiece is 1.9 cm. What is the focal length of the objective?
 
  A) 41 cm
  B) 45 cm
  C) 111 cm
  D) 218 cm
  E) 16 cm

[wshriver]

Answer to Question 1

E

Answer to Question 2

D