Weighing Something in an Elevator

In summary, when using a Newton spring scale in an elevator, the scale will display the largest number when there is an acceleration present. If the elevator is moving at a constant velocity, there will be no affect on the scale. This means that the scale will read more on the way up rather than on the way down. This conclusion is based on Newton's 2nd law, which states that the net force must be in the direction of the acceleration.
  • #1
PhysicsAdvice
37
0
If you were to way an object on a Newton spring scale in an elevator, when would the scale display the largest number?

elevator moving up
moving down
no affect


In my opinion, an acceleration in the elevator would be required, as that would unbalance the forces and was traveling at a constant velocity there would be no affect. I feel as though if anything it would be on the way up rather than down that the scale might read more but this is more a hunch than anything, looking forward to your thoughts!
 
Physics news on Phys.org
  • #2
PhysicsAdvice said:
If you were to way an object on a Newton spring scale in an elevator, when would the scale display the largest number?

elevator moving up
moving down
no affect


In my opinion, an acceleration in the elevator would be required, as that would unbalance the forces and was traveling at a constant velocity there would be no affect.
You are correct, the problem is not worded correctly
I feel as though if anything it would be on the way up rather than down that the scale might read more but this is more a hunch than anything, looking forward to your thoughts!
This is correct, but rather tnan make it a hunch, apply Newton's 2nd law...the net force must be in the direction of the acceleration.
 

Related to Weighing Something in an Elevator

What is the purpose of weighing something in an elevator?

The purpose of weighing something in an elevator is to determine its weight in relation to the force exerted by the elevator. This can help calculate the mass of the object and the gravitational force acting on it.

How does the weight of an object change in an elevator?

The weight of an object in an elevator changes depending on the direction of the elevator's movement. When the elevator is moving upwards, the object will weigh more due to the added force of acceleration. When the elevator is moving downwards, the object will weigh less due to the decreased force of acceleration.

Why is it important to consider the weight of an object in an elevator?

Considering the weight of an object in an elevator is important for safety and efficiency. Knowing the weight of an object can help determine the maximum weight capacity of the elevator and prevent overloading. It can also help with proper distribution of weight in the elevator to ensure stability during movement.

What factors can affect the weight of an object in an elevator?

The weight of an object in an elevator can be affected by several factors, including the acceleration and direction of the elevator's movement, the mass and density of the object, and the force of gravity. Other factors such as air resistance and friction may also have a small impact on the weight of an object.

Can the weight of an object in an elevator be measured accurately?

The weight of an object in an elevator can be measured accurately if the elevator is in a constant state of motion. However, if the elevator is accelerating or decelerating, the weight may fluctuate. To get the most accurate measurement, it is best to take multiple readings while the elevator is in motion and calculate the average weight.

Similar threads

  • Introductory Physics Homework Help
Replies
6
Views
2K
  • Introductory Physics Homework Help
Replies
6
Views
2K
  • Introductory Physics Homework Help
Replies
20
Views
1K
  • Introductory Physics Homework Help
Replies
5
Views
11K
  • Introductory Physics Homework Help
Replies
9
Views
1K
  • Introductory Physics Homework Help
Replies
2
Views
11K
Replies
12
Views
3K
  • Introductory Physics Homework Help
Replies
5
Views
3K
  • Introductory Physics Homework Help
Replies
5
Views
6K
Replies
11
Views
2K
Back
Top