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Author Question: Two identical ladders are 3.0 m long and weigh 600 N each. They are connected by a hinge at the top ... (Read 113 times)

ARLKQ

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on: Jul 29, 2018
Two identical ladders are 3.0 m long and weigh 600 N each. They are connected by a hinge at the top and are held together by a horizontal rope, 1.0 m above the smooth floor forming a symmetric A arrangement.
 
  The angle between the ladders is 60 and both ladders have their center of gravity at their midpoint. What is the tension in the rope? A) 240 N
  B) 300 N
  C) 220 N
  D) 260 N
  E) 280 N

Question 2

An object drops a distance h in a time of 6.3 s on the surface of the earth (neglecting air effects).
 
  How long would it take the same object to drop the same distance on the surface of spherical asteroid X having a mass of 1.1  1022 kg and a radius of 4.0  105 m? (G = 6.67  10-11 N  m2/kg2,
  Mearth = 5.97  1024 kg, Rearth = 6.38  106 m)
  A) 9.2 s
  B) 6.3 s
  C) 5.2 s
  D) 12 s
  E) 3.3 s


Sammyo

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Reply #1 on: Jul 29, 2018
Answer to Question 1

E

Answer to Question 2

A


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