Physics Force & Laws Of Motion Level: Misc Level

An object of mass m is hanging by a string from the roof of an elevator. We want to compare the tension in the string to the weight under various conditions. Which of these statements is /are true?

a) If the elevator is moving up at a constant speed the net force on the object is zero.

b) If the elevator is moving upwards and speeding up, the tension in the string is greater than the objects weight.

c) If the elevator is moving downwards in free fall, the tension in the string is equal to the objects weight.

d) If the elevator is moving downwards, and slowing down, the tension in the string is greater than the objects weight.

e) If the elevator is moving upwards, but slowing down the tension in the string is equal to the objects weight.