A 5.0-kg mass is attached to the ceiling of an elevator by a rope whose mass is negligible. What force does the mass exert on the rope when the elevator has an acceleration of 4.0 m/s2 upward?

a. 69 N downward
b. 29 N downward
c. 49 N downward
d. 20 N downward
e. 19 N downward


a

Physics & Space Science

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