Does getting sucked up require more energy then getting pushed away?

  • Thread starter Do0msDay
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In summary, the conversation discusses the difference between the energy required for an object to be sucked up versus pushed away. It is mentioned that the energy needed will depend on the efficiency of the device and the direction of the force. The concept of potential energy is also brought up and the importance of clarifying the question is emphasized. Additionally, Newton's Third Law is mentioned as a factor in determining the energy needed.
  • #1
Do0msDay
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For instance The object has same mass in both cases.
And the force of getting sucked and pushed away is also the same.

Does getting sucked up require more energy then getting pushed away?
 
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  • #2
Do0msDay said:
For instance The object has same mass in both cases.
And the force of getting sucked and pushed away is also the same.

Does getting sucked up require more energy then getting pushed away?

Why don't you test this with an idealized adiabatic piston and an ideal gas trapped inside the piston? Is the work done in compressing the piston by an amount equal or different than the work done by the gas in expanding back to the piston's original position?

Zz.
 
  • #3
ZapperZ said:
Why don't you test this with an idealized adiabatic piston and an ideal gas trapped inside the piston? Is the work done in compressing the piston by an amount equal or different than the work done by the gas in expanding back to the piston's original position?

Zz.

I don't have one.
 
  • #4
Do0msDay said:
I don't have one.

No one has an "idealized piston". It wasn't meant to be an experiment. It was meant for you to calculate!

Zz.
 
  • #5
Do0msDay said:
For instance The object has same mass in both cases.
And the force of getting sucked and pushed away is also the same.

Does getting sucked up require more energy then getting pushed away?

The required energy will depend on the efficiency of the device doing the sucking/pulling; if they were perfectly efficient there would be no difference. In practical applications pushing is often more efficient, but this is by no means universally true.
 
  • #6
No one has asked you the actual context of this question. A sketch of the sort of arrangement you are considering would help. I have a feeling you may not be talking in terms of pistons and cylinders.
 
  • #7
Do0msDay said:
For instance The object has same mass in both cases.
And the force of getting sucked and pushed away is also the same.

Does getting sucked up require more energy then getting pushed away?

If "sucking up" you mean in the vertical direction upwards; and by being pushing away you could mean in any direction; then there would be a difference.

By going upwards, the mass will have an increase in gravitational potential energy. You will have to supply this energy.
By pushing away, say in the horizontal direction, the gravitational potential energy stays the same. If on a surface, friction due to sliding will require an energy expenditure.

Pushing away in any other direction from the horizontal entails a change in potential energy. This could help you in if the final position is below the initial, or add to the energy expenditure if above the initial position.

You may have to clarify your question.
 
  • #8
One thing that's certain, in open conditions, is that 'blow' can be directed from a jet, producing a higher pressure in a given direction. If you have a low pressure in an orifice, air will flow in from all directions and you can't 'focus the suck' as much because, for a given total amount of air flow, the pressure gradient is less.
 
  • #9
NEWTON's third LAW can work here.
Besides, Question is not complete.
 

Related to Does getting sucked up require more energy then getting pushed away?

1. What is the difference between getting sucked up and getting pushed away?

The main difference between getting sucked up and getting pushed away is the direction of the force acting on the object. When an object is being sucked up, it is being pulled towards the source of suction. On the other hand, when an object is being pushed away, it is being pushed away from the source of the force.

2. How does getting sucked up require more energy than getting pushed away?

Getting sucked up typically requires more energy than getting pushed away because it involves overcoming the force of suction pulling the object towards a source. This force can be quite strong and requires more energy to counteract compared to the force of being pushed away.

3. Does the amount of energy required to get sucked up or pushed away depend on the weight of the object?

Yes, the amount of energy required to get sucked up or pushed away does depend on the weight of the object. Heavier objects require more energy to be moved compared to lighter objects. This is because the force of gravity acting on the object increases with weight, making it harder to move.

4. What factors affect the amount of energy required to get sucked up or pushed away?

The amount of energy required to get sucked up or pushed away can be affected by several factors. These include the weight of the object, the strength of the force of suction or push, and the distance between the object and the source of the force. Other factors such as air resistance and friction can also play a role in the amount of energy needed.

5. Can getting sucked up or pushed away be beneficial for an object?

Yes, getting sucked up or pushed away can be beneficial for an object depending on the situation. For example, an object being sucked up by a vacuum cleaner is being cleaned, which is beneficial. Similarly, an object being pushed away from a dangerous situation can also be considered beneficial. However, excessive suction or force can be harmful to an object and may cause damage.

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