anonymous
  • anonymous
A 50 kg person is standing on a bathroom scale in an elevator moving upward. a.) if the scale reads 56 kg, what is the magnitude of upward acceleration of the elevator (m/s^2)? b.) Now the elevator is traveling up while slowing down. If the magnitude of deceleration is the same as that in part (a), what is reading given by the scale?
Physics
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anonymous
  • anonymous
A 50 kg person is standing on a bathroom scale in an elevator moving upward. a.) if the scale reads 56 kg, what is the magnitude of upward acceleration of the elevator (m/s^2)? b.) Now the elevator is traveling up while slowing down. If the magnitude of deceleration is the same as that in part (a), what is reading given by the scale?
Physics
katieb
  • katieb
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anonymous
  • anonymous
\[R = m(g+a)\] \[560 = 50 (10 +a)\] \[560 = 500 + 50a\] \[60 = 50a\] \[a = \frac{ 6 }{ 5 } = 1.2m/s^2\]
anonymous
  • anonymous
b) travelling up, decelerating: N = m(g- 6/5) N = m*8.8 = 440 N (scale reading)
anonymous
  • anonymous
Thanks Yahoo! =)

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anonymous
  • anonymous
@Algebraic - thanks for replying to the question. I think they're wanting the answer to be in kg, so would I just convert the 440 N to kg? Or do I use another formula to find it?
anonymous
  • anonymous
@gifty91 Do u have the answer key with u
anonymous
  • anonymous
anonymous
  • anonymous
Not really.. I just get 5 attempts at a question, and after the 5th attempt, it'll only show me the correct answer.

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