Solution Found!
Zach, whose mass is 80 kg, is in an elevator descending at
Chapter 6, Problem 32P(choose chapter or problem)
Zach, whose mass is 80 kg, is in an elevator descending at 10 m/s. The elevator takes 3.0 s to brake to a stop at the first floor.
a. What is Zach’s weight before the elevator starts braking?
b. What is Zach’s weight while the elevator is braking?
Questions & Answers
QUESTION:
Zach, whose mass is 80 kg, is in an elevator descending at 10 m/s. The elevator takes 3.0 s to brake to a stop at the first floor.
a. What is Zach’s weight before the elevator starts braking?
b. What is Zach’s weight while the elevator is braking?
ANSWER:
Step 1 of 2
a.)
We have to find Zach’s apparent weight before the elevator starts braking.
The acceleration acting on the Zach’s before the elevator starts braking is only acceleration due to gravity .
Hence, Zach’s apparent weight is given by
Where,
Zach’s mass = 80 kg
Thus,
= 784 N
Therefore, Zach’s apparent weight before the elevator starts braking is 784 N.