(a) An elevator of mass m moving upward has two forcesacting on it: the upward f

Question

(a) An elevator of mass m moving upward has two forcesacting on it: the upward force of tension in the cable and thedownward force due to gravity. When the elevator is acceleratingupward, which is greater, T or w? 1 T
w
Both forces are equal.


(b) When the elevator is moving at a constant velocity upward,which is greater, T or w? 2 T
w
Both forces are equal.


(c) When the elevator is moving upward, but the acceleration isdownward, which is greater, T or w? 3 T
w
Both forces are equal.


(d) Let the elevator have a mass of 1500kg and an upward acceleration of 2.5m/s2. Find T.
Enter anumber. 4 N

Is your answer consistent with the answer to part (a)? 5 yes
no


(e) The elevator of part (d) now moves with constant upwardvelocity of 10 m/s. Find T.
Enter anumber. 6 N
Is your answer consistent with your answer topart (b)? 7 yes
no


(f) Having initially moved upward with a constant velocity, theelevator begins to accelerate downward at 1.90 m/s2. Find T.
Enter anumber. 8 N
Is your answer consistent with your answer topart (c)? 9 yes
no 1 T
w
Both forces are equal.
1 T
w
Both forces are equal.
1 2 T
w
Both forces are equal.
2 T
w
Both forces are equal.
2 3 T
w
Both forces are equal.
3 T
w
Both forces are equal.
3 Enter anumber. 5 yes
no
5 yes
no
5 Enter anumber. 7 yes
no
7 yes
no
7 Enter anumber. 9

Explanation / Answer

3 .
3 .
3 .
5 yes
5 yes
5 .
7 yes
7 yes
7
9

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