A 28 kg man stands on a spring scale in
an elevator. Starting from rest, the eleva-
tor ascends, attaining its maximum speed of
1.7 m/s in 0.8 s. It travels with this constant
speed for the next 4.1 s, undergoes a uniform
negative acceleration for 2.5 s, and comes to
rest.

What does the spring scale register before
the elevator starts to move?
The acceleration of gravity is 9.8 m/s².

A 323.4
B 911.4
C 960.4
D 764.4
E 852.6
F 617.4
G 950.6
H 450.8
J 274.4
M 793.8
Answer in units of N