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Author Question: The mass in the figure below slides on a frictionless surface. When the mass is pulled out, ... (Read 159 times)

armygirl

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on: Jul 28, 2018
The mass in the figure below slides on a frictionless surface.
   
  When the mass is pulled out, spring 1 is stretched a distance x1 from its equilibrium position and spring 2 is stretched a distance x2. The spring constants are k1 and k2, respectively. The force pulling back on the mass is
 
 
 
   
  a.
  k2x1.
   
  b.
  k2x2.
   
  c.
  (k1x1 + k2x2).
   
  d.
  .
   
  e.
  .

Question 2

A torsional pendulum consists of a solid disk (mass = 2.0 kg, radius = 1.0 m) suspended by a wire attached to a rigid support. The body oscillates about the support wire. If the torsion constant is 16 Nm/rad. What is the angular frequency (in rad/s)?
 
   


   
  a.
  2
   
  b.
  4
   
  c.
  6
   
  d.
  8
   
  e.
  7


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jessofishing

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Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

b


armygirl

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Reply 2 on: Jul 28, 2018
Wow, this really help

diana chang

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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