You are standing on a scale inside an elevator. The scale reads zero. Check all

Question

You are standing on a scale inside an elevator. The scale reads zero. Check all possible answers:
Answer

1The elevator could be at rest.

2The elevator could be moving up at constant speed.

3The elevator could be moving down at constant speed.

4The elevator is accelerating upward at 9.81 m/s2.

5The elevator is accelerating downward at 9.81 m/s2.


Question 2


You are standing on a scale inside an elevator. The scale reads your weight. Check all possible answers:
Answer

1The elevator could be at rest.

2The elevator could be moving up at constant speed.

3The elevator could be moving down at constant speed.

4The elevator is accelerating upward.

5The elevator is accelerating downward.


Question 3


You are standing on a scale inside an elevator. The scale reads exactly your weight. What could be the velocity of the elevator?(Define positive y up.)
Answer

+1.7 m/s

0 m/s

-3.5 m/s

+9.81 m/s

-9.81 m/s

All of the above


Question 4


You are standing on a scale inside an elevator. The scale reads 138 percent of your weight. What is the acceleration of the elevator?(Define positive y upward.)
Answer

Question 5


You are standing on a scale inside an elevator. The scale reads 51 percent of your weight. What is the acceleration of the elevator?(Define positive y upward.)
Answer


Question 6


You are standing on a scale inside an elevator. The scale reads 19 percent more than your weight. What is the acceleration of the elevator?(Define positive y upward.)
Answer


Question 7


You are standing on a scale inside an elevator. The scale reads 23 percent less than your weight. What is the acceleration of the elevator?(Define positive y upward.)
Answer

Question 8


You are standing on a scale inside an elevator. The scale reads 10% more than your weight. Check all possible answers:
Answer

The elevator could be at rest.

The elevator could be moving up at constant speed.

The elevator could be moving down at constant speed.

The elevator is accelerating upward.

The elevator is accelerating downward.

Question 9


You are standing on a scale inside an elevator. The scale reads 10% less than your weight. Check all possible answers:
Answer

The elevator could be at rest.

The elevator could be moving up at constant speed.

The elevator could be moving down at constant speed.

The elevator is accelerating upward.

The elevator is accelerating downward.


Question 10


You are standing inside an elevator that is accelerating upward at 1.5 m/s2. The normal force exerted from the floor on your feet (check all that apply)
Answer

is in magnitude the same as your weight.

is directed upward.

vanishes.

is in magnitude larger than your weight.

is in magnitude lower than your weight.

is directed downward.

Question 11


You are standing inside an elevator that is accelerating downward at 9.81 m/s2. The normal force exerted from the floor on your feet (check all that apply)
Answer

is directed upward.

is in magnitude lower than your weight.

is in magnitude larger than your weight.

is directed downward.

is in magnitude the same as your weight.

vanishes.


Question 12


You are standing inside an elevator that is accelerating downward at 1.5 m/s2. The normal force exerted from the floor on your feet (check all that apply)
Answer

is directed downward.

is in magnitude lower than your weight.

vanishes.

is in magnitude the same as your weight.

is directed upward.

is in magnitude larger than your weight.

Explanation / Answer

5 123 all of above 3.72 -4.8 1.8 2.25 4 5 24 6 25

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