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1.Three cylinders from the same mix were tested for strenght.  Cylinders A and B were cast in 4x8 molds while cylinder C was cast in a 6x12 mold.  The total loads were as follows; cylinder A= 65,200 lbs.,  cylinder B= 68,550 lbs., cylinder C= 151,190 lbs.  Determine the average P.S.I for this mix?

2.A 6kg diskA has an initial velocity of 20m/s and strikes heaadon diskB that has a mass of 24kg and is originally at rest.

If the collision is perfectly elastic,

Determine the speed of each disk after the collision and the impulse which disk A imparts to disk B.

Civil Engineering, Engineering

  • Category:- Civil Engineering
  • Reference No.:- M91069372

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