107 138
Assignments Done
100%
Successfully Done
In January 2023

# Answer to Question #107125 in Mechanics | Relativity for Salma

Question #107125
Apparent Weight You take a ride in a fast
elevator to the top of a tall building and ride
back down. Compare your apparent and real
weights at each part of the journey. Sketch
1
2020-03-31T09:32:21-0400

Consider two cases , where the fast elevator is going up and going down.

For each of the cases, apparent weight is given by R as shown in the free body diagram.

For the going upward case,

From the Free body diagram.

"F=ma\\\\\nR_1 -mg= ma \\\\\nR_1=m(g+a)"

Therefore the apparent weight will be greater than the real weight if the elevator is going upwards and accelerating "(a>0)" and will be lower than the real weight if the elevator is decelerating (a<0).

For the going downward case,

From the Free body diagram.

"F=ma\\\\\nmg-R_2=ma\\\\\nR_2=m(g-a)\\\\"

Therefore the apparent weight will be lower than the real weight if the elevator is going downwards and accelerating "(a>0)" and will be higher than the real weight if the elevator is decelerating "(a<0)" .

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!