ineken
Oct 4, 2011, 10:29 AM
A 65 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. It travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.2 s, and comes to rest. What does the spring scale register in each of the following time intervals?
(a) before the elevator starts to move
N
(b) during the first 0.89 s
N
(c) while the elevator is traveling at constant speed
N
(d) during the negative acceleration
N
(a) before the elevator starts to move
N
(b) during the first 0.89 s
N
(c) while the elevator is traveling at constant speed
N
(d) during the negative acceleration
N