Analyzing Frictionless Motion: Va vs Vb

In summary, the problem involves two masses connected by a pulley and moving in a frictionless environment. The velocity of one mass, Va, is initially greater than the velocity of the other mass, Vb, but as time passes the velocity of Vb increases and becomes greater than Va. The problem may require a diagram for better understanding.
  • #1
kuuooomar
1
0

Homework Statement


va=va vb=vb m1>m2
frictionless

Homework Equations





The Attempt at a Solution


So i got this question where m1 is on a table and connected to a pully and m2 is hanging off the table, which have a Va (velocity). Then a few seconds later the pully is drawing in and the distance from m1 and the pully decreases, basically the pully is going down. This was considered Vb(velocity). The instructor asked us which had more velocity or did it stay the same, my intution is telling me that the velocity increased but through energy of conservation I feel like it stayed constant and went to the hanging mass. I have no idea, I already took the quiz and just want some reassurance on whether i was right or wrong >_<
 
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  • #2
Welcome to PF!
I'd like to help, but I just don't understand the question as written. Actually a diagram is pretty much necessary to sort out pulley problems.
 
  • #3
I agree a diagram would be helpful... From my understanding of the problem is that you have two masses connected via a pulley, one of the masses is on a table (assuming the table is not angled...) and the other mass is hanging freely.

It sounds to me like you are asking if V(t) is increasing so assuming that is actually the problem then Vb is greater than Va since the table is frictionless and you have a constant acceleration due to gravity.
 

1. What is frictionless motion?

Frictionless motion is a theoretical concept in physics that refers to the movement of an object without any resistance or opposing force. In reality, all objects experience some level of friction, but in a frictionless scenario, the object would continue to move indefinitely without slowing down.

2. What is the difference between Va and Vb in frictionless motion?

Va and Vb refer to the velocities of two different objects in a frictionless scenario. Va is the initial velocity of the first object, while Vb is the initial velocity of the second object. These velocities can be used to analyze the motion of the objects and determine if they will collide or continue on separate paths.

3. How does frictionless motion affect the laws of motion?

In a frictionless scenario, the laws of motion still apply. However, since there is no friction, there will be no opposing forces to slow down the objects, so they will continue to move at a constant velocity. This can lead to some interesting observations and calculations, as the objects will behave differently than they would in a real-world scenario with friction present.

4. Can we observe frictionless motion in real life?

No, frictionless motion is a theoretical concept and cannot be observed in real life. However, scientists can create simulations or conduct experiments in highly controlled environments to approximate frictionless motion and study its effects.

5. How does analyzing frictionless motion help us understand real-life scenarios?

Studying frictionless motion can help us better understand the underlying principles of motion and how different variables, such as velocity and acceleration, affect an object's movement. This can be applied to real-life scenarios, such as designing more efficient transportation systems or predicting the trajectory of objects in space.

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