Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 21 Sep 2017 My Price 3.00

construction crane

1. Lifting a weight to a height of 20 m takes 20 s for one crane and 10 s for another. Is there any difference in the amount of work done on the weight by each crane?

2. A construction crane lifts a prestressed concrete beam weighing 3 short tons from the ground to the top of piers that are 36 ft above the ground. Determine theamount of work done considering (a) the beam and (b) the crane as the system. Express your answers in both lbf·ft and Btu.

Answers

Maurice Tutor
(5)
Status NEW Posted 21 Sep 2017 09:09 PM My Price 3.00

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