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anonymous
 one year ago
a 75 kg physics student rides in the elevator. find the apparent weight of the student if:
a. the elevator is moving vertically up at constant velocity of 5.0 J m/s
b. the elevator decelerates as it moves up at 3.5m/s^2
anonymous
 one year ago
a 75 kg physics student rides in the elevator. find the apparent weight of the student if: a. the elevator is moving vertically up at constant velocity of 5.0 J m/s b. the elevator decelerates as it moves up at 3.5m/s^2

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Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1case a) since the elevator is moving with constant velocity, then it is an inertial reference system, so the weight is given by the same formula, namely: P=m*g=...?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1case b), on our student is acting fictitious force, due to the acceleration of the elevator. Here is the situation: dw:1436131589250:dw so we can write this vector equation: \[{{\mathbf{W}}_{{\mathbf{APPARENT}}}} = M{\mathbf{g}}  M{\mathbf{a}}\] from which we have the subsequent scalar equation: \[\left {{{\mathbf{W}}_{{\mathbf{APPARENT}}}}} \right = Mg + Ma\] for the magnitude of the apparent weight

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you i get it now
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