(adsbygoogle = window.adsbygoogle || []).push({}); please help me.....

(a) An elevator of mass m moving upward has two forces

acting on it: the upward force of tension in the cable and

the downward force due to gravity. When the elevator is

accelerating upward, which is greater, T or w? (b) When

the elevator is moving at a constant velocity upward,

which is greater, T or w? (c) When the elevator is moving

upward, but the acceleration is downward, which

is greater, T or w? (d) Let the elevator have a mass of

1 500 kg and an upward acceleration of 2.5 m/s2. Find T.

Is your answer consistent with the answer to part (a)? (e)

The elevator of part (d) now moves with a constant up-

ward velocity of 10 m/s. Find T. Is your answer consistent

with your answer to part (b)? (f) Having initially moved

upward with a constant velocity, the elevator begins to ac-

celerate downward at 1.50 m/s2. Find T. Is your answer

consistent with your answer to part (c)?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Please help me .

**Physics Forums | Science Articles, Homework Help, Discussion**