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A 73-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.89 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.7 s, and then comes to rest. (a) What does the spring scale register before the elevator starts to move? (b) What does the spring scale register during the first 0.89 s of the elevator's ascent? N (c) What does the spring scale register while the elevator is traveling at constant speed? (d) What does the spring scale register during the elevator's negative acceleration? N

A 73-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.89 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.7 s, and then comes to rest. (a) What does the spring scale register before the elevator starts to move? (b) What does the spring scale register during the first 0.89 s of the elevator's ascent? N (c) What does the spring scale register while the elevator is traveling at constant speed? (d) What does the spring scale register during the elevator's negative acceleration? N

University Physics Volume 1
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter6: Applications Of Newton's Laws
Section: Chapter Questions
Problem 40P: A service elevator takes a load of garbage, mass 10.0 kg, from a floor of a skyscraper under...
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A 73-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.89 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.7 s, and then comes to rest. (a) What does the spring scale register before the elevator starts to move? (b) What does the spring scale register during the first 0.89 s of the elevator's ascent? (c) What does the spring scale register while the elevator is traveling at constant speed? (d) What does the spring scale register during the elevator's negative acceleration?
Transcribed Image Text:A 73-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.89 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.7 s, and then comes to rest. (a) What does the spring scale register before the elevator starts to move? (b) What does the spring scale register during the first 0.89 s of the elevator's ascent? (c) What does the spring scale register while the elevator is traveling at constant speed? (d) What does the spring scale register during the elevator's negative acceleration?
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