A 79-kg woman holds a 7-kg package as she stands within an elevator which briefly accelerates upward at a rate of 0.27g. Determine the force R which the elevator floor exerts on her feet and the lifting force L which she exerts on the package during the acceleration interval. If the elevator support cables suddenly and completely fail, what values would R and Lacquire?

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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A 79-kg woman holds a 7-kg package as she stands within an elevator which briefly accelerates upward at a rate of 0.27g. Determine
the force R which the elevator floor exerts on her feet and the lifting force L which she exerts on the package during the acceleration
interval. If the elevator support cables suddenly and completely fail, what values would R and Lacquire?
7kg
0.27g
79kg
Answers:
While accelerating,
R =
i
N L= i
N
After the cables fail, R=
i
N L=
N
Transcribed Image Text:A 79-kg woman holds a 7-kg package as she stands within an elevator which briefly accelerates upward at a rate of 0.27g. Determine the force R which the elevator floor exerts on her feet and the lifting force L which she exerts on the package during the acceleration interval. If the elevator support cables suddenly and completely fail, what values would R and Lacquire? 7kg 0.27g 79kg Answers: While accelerating, R = i N L= i N After the cables fail, R= i N L= N
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