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anonymous
 one year ago
Four weightlifters (AD) enter a competition. The mass and distance that each lifts are shown in the table drawn inside. Which weightlifter does the least work?
weighlifter A, weightlifter B, weightlifter C, or Weightlifter D?
anonymous
 one year ago
Four weightlifters (AD) enter a competition. The mass and distance that each lifts are shown in the table drawn inside. Which weightlifter does the least work? weighlifter A, weightlifter B, weightlifter C, or Weightlifter D?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1433095867077:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0W = weightlifter D =distance :)

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1the work W done, is given by the subsequent formula: \[W = mgd\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes:) so the one with the least work is the smallest value of that? how can we find that?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1it is simple we have to compute the work W for all of your four cases

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok! how do we plug in? :/

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1since the gravity g=9.81, is equal for all the weightlifter, it is suffice to compare the four products mass*distance each other

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok! so weightlifter A = 225 B=264 C=300 D=312.5 so A is our solutoin? he does the least work?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1so: case A>M*D=225 case B>M*D=264 case C> M*D=300 case D>M*D=312.5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yay!! thank you!! onto the next! :P
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