A 72.0-kg man stands on a spring scale in an elevator.Starting from rest, the elevator ascends, attaining its maximum speed of 1.20 m/s in 0.800 s. It travels with this constant speed for the next 5.00 s. The elevator then undergoes a uniform acceleration in the negative y direction for 1.50 s and comes to rest. What does the spring scale register (a) before the elevator starts to move? (b) during the first 0.800 s? (c) while the elevator is traveling at constant speed? (d) during the time it is slowing down
A 72.0-kg man stands on a spring scale in an elevator.Starting from rest, the elevator ascends, attaining its maximum speed of 1.20 m/s in 0.800 s. It travels with this constant speed for the next 5.00 s. The elevator then undergoes a uniform acceleration in the negative y direction for 1.50 s and comes to rest. What does the spring scale register (a) before the elevator starts to move? (b) during the first 0.800 s? (c) while the elevator is traveling at constant speed? (d) during the time it is slowing down
Classical Dynamics of Particles and Systems
5th Edition
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Stephen T. Thornton, Jerry B. Marion
Chapter2: Newtonian Mechanics-single Particle
Section: Chapter Questions
Problem 2.51P: Let us make the (unrealistic) assumption that a boat of mass m gliding with initial velocity v0 in...
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A 72.0-kg man stands on a spring scale in an elevator.Starting from rest, the
elevator ascends, attaining its maximum speed of 1.20 m/s in 0.800 s. It travels
with this constant speed for the next 5.00 s. The elevator then undergoes a
uniform acceleration in the negative y direction for 1.50 s and comes to rest.
What does the spring scale register (a) before the elevator starts to move? (b)
during the first 0.800 s? (c) while the elevator is traveling at constant speed? (d)
during the time it is slowing down
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