How Does the Incline Plane Affect Potential Energy in a Two-Mass System?

Click For Summary

Homework Help Overview

The discussion revolves around a two-mass system involving a mass on an incline plane and another mass hanging off the incline, connected by a rope and pulley. Participants are exploring how the configuration affects potential energy within the system.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the roles of both masses in determining potential energy, with some suggesting that both masses contribute to the system's potential energy. There is also a discussion about the relationship between the heights of the two masses and how they affect calculations.

Discussion Status

The discussion is active, with various interpretations being explored regarding the contributions of each mass to the potential energy. Some participants have offered insights into the relationship between the heights of the masses and the potential energy calculations, while others have raised questions about the system's configuration.

Contextual Notes

There are indications that participants are considering the implications of different heights for each mass and the effects of gravitational acceleration. The conversation reflects a mix of understanding and uncertainty regarding the setup and its impact on potential energy.

Larrytsai
Messages
222
Reaction score
0
If I have a mass m1 sitting on an incline plane attached by a rope and a pulley to another mass m2 hanging off the incline plane, what would be the potential energy?

I was thinking that m1 only plays a role on the potential energy.
 
Physics news on Phys.org
Larrytsai said:
If I have a mass m1 sitting on an incline plane attached by a rope and a pulley to another mass m2 hanging off the incline plane, what would be the potential energy?

I was thinking that m1 only plays a role on the potential energy.

Can m2 also rise and/or fall ?
 
m2 can rise or fall
 
Larrytsai said:
m2 can rise or fall
In that case, its potential energy changes.

Is m2 part of the system ?
 
yes m2 is conneced by a rope and I would like to find the velocity of m1 after it leaves the ramp.

So if it does change the systems potential energy would it just be

PE = g*(m1*height + m2*height)

the height of each respective mass are different.
 
Larrytsai said:
yes m2 is connected by a rope and I would like to find the velocity of m1 after it leaves the ramp.

So if it does change the systems potential energy would it just be

PE = g*(m1*height + m2*height)

the height of each respective mass are different.

Yes, the height of each respective mass is different. All that matters is change in height. Mass, m1, is on an inclined plane, so when the height of m2 decreases by Δh, the height of m1 increases by a lesser amount. Use trig to relate the two.
 
Potential energy will not affected by the other mass.

PE = mgh , mass x gravity x height.

You know the mass, and you know gravity is equal to 9.81 so you will need to know the height.

Jock
 
QuantumJock said:
Potential energy will not affected by the other mass.

PE = mgh , mass x gravity x height.

You know the mass, and you know gravity is equal to 9.81 so you will need to know the height.

Jock
Hello QuantumJock. Welcome to PF !

You have replied to a thread which has been idle for several months .
 
Oh woops I'm sorry! Still new!

Jock
 

Similar threads

  • · Replies 2 ·
Replies
2
Views
1K
Replies
17
Views
2K
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 33 ·
2
Replies
33
Views
3K
Replies
15
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 15 ·
Replies
15
Views
2K