Additional Info

• ID Code: B2-34
• Purpose: Verify the equation for torques when the center of mass is outside the object
• Description:

  A bracket is bent into a right triangle with arms of length a and 2a, and suspended from the end of the small arm as photographed. What is the angle of repose r of the small arm with the vertical, at equilibrium?

  
  

  From the equation of torques, w1 x1 = w2 x2,

  
  

  where: w1= mg and x1= a/2 sin r,

  
  

  also: w2 = 2mg and x2 = a cos r - a sin r)

  
  

  From these, tan r = 4/5, and r = 38.66 degrees.

• Availability: Available
• References: REFERENCES: (PIRA unknown.)
• Loc codes: B2