True-false questions about frictionaless, masslesss pulleys

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Homework Help Overview

The discussion revolves around true-false questions related to a frictionless, massless pulley system involving two masses, m1 and m2, where m2 is greater than m1. Participants are evaluating statements about the relationship between the accelerations of the masses, the behavior of the center of mass, and the tension in the strings.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the equality of acceleration between the two masses, the acceleration of the center of mass, and the relationship between tension and gravitational force. Questions arise regarding the reasoning behind each statement and the implications of net forces acting on the system.

Discussion Status

Some participants have provided feedback on the original poster's answers, indicating that one response is incorrect and prompting further explanation of reasoning. There is an ongoing exploration of the concepts involved, particularly concerning the center of mass and the forces acting on the system.

Contextual Notes

Participants are working within the constraints of true-false questions and are encouraged to clarify their reasoning without providing direct solutions. The original poster expresses uncertainty about their answers, indicating a need for deeper understanding.

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Homework Statement



These are true/ false questions, equal to, >, or <
A frictionless, massless pulley is attached to a ceiling, Mass m2 is greater than mass m1.

A. The magnitude of the acceleration of m2 is ... the magnitude of the acceleration on m1.
B. The center of mass accelerates.
C. The tension in string one(t1) is ... m1g.

Homework Equations



F= ma,

The Attempt at a Solution


A. The magnitude of the acceleration of m2 is equal to the magnitude of the acceleration of m1
B. False- the center of mass does not accelerate
C. The tension in stringone should be> than that in m1g


I have something wrong but I don't know what?
Help, please
 
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You have just one wrong. Can you explain your reasoning for each answer?
 


A. The magnitude of the acceleration has to be equal because the tension in the strings of the pulley would have to be equal
B.The center of the mass does not accelerate because there is no force acting on it.
C.The tension in string 1 is greater than m1g, because it would have to be in orderfor the pulley to work .
 


If there is a net force acting on each mass, wouldn't there be a net force acting on its center of mass? And your reasoning for the others is not correct.
 

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