"Scale in Elevator: Should Student Worry?

In summary, the weight limit or "scale" in an elevator refers to the maximum weight the elevator can safely support. It is determined by the manufacturer and is based on various factors such as the weight of the elevator car and mechanical components. It is not safe for students (or anyone) to exceed the weight limit as it can cause malfunctions or accidents. Factors such as weight distribution and elevator speed can also affect the scale. If students notice the elevator is at its weight limit, they should wait for the next one or take the stairs and notify building management if this happens frequently.
  • #1
Crusaderking1
159
0

Homework Statement



A person stands on an scale in an elevator.

If the scale reads zero, should the student worry? Explain.

Homework Equations





The Attempt at a Solution



I think the student would be in free fall and he should worry. The only force acting on the elevator would be gravity and the normal force and weight would be 0.

Right?
 
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  • #2
Yup.
 
  • #3
gneill said:
Yup.

Thank you.
 

1. What is "scale" in an elevator and why should students worry about it?

"Scale" in an elevator refers to the weight limit or capacity of the elevator. Students should be aware of this because exceeding the weight limit can be dangerous and can potentially damage the elevator, leading to malfunctions or accidents.

2. How is the weight limit determined for an elevator?

The weight limit for an elevator is determined by the manufacturer and is based on the maximum weight the elevator can safely support. This weight limit is calculated by considering the weight of the elevator car, the cables, and the counterweight, as well as the strength of the motor and other mechanical components.

3. Is it safe for students to exceed the weight limit in an elevator?

No, it is not safe for students (or anyone) to exceed the weight limit in an elevator. Doing so can cause the elevator to malfunction or even get stuck between floors, which can be dangerous for passengers. It is important to follow the posted weight limit for the safety and well-being of everyone using the elevator.

4. Are there any other factors besides weight that can affect the scale in an elevator?

Yes, there are other factors that can affect the scale in an elevator. These include the distribution of weight within the elevator car (for example, if everyone stands on one side of the elevator), as well as the speed and acceleration of the elevator. These factors can impact the overall weight supported by the elevator and should be taken into consideration.

5. What should students do if they notice the elevator is at or near its weight limit?

If students notice that the elevator is at or near its weight limit, they should wait for the next elevator or take the stairs. It is not safe to exceed the weight limit, so it is important to follow the posted guidelines. Additionally, students can also notify building management or maintenance if they notice the elevator frequently reaching its weight limit, as this may indicate a need for adjustment or maintenance.

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