Series of True or False questions related to Forces and FBDs

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SUMMARY

The forum discussion centers on a series of True or False questions regarding forces and free body diagrams (FBDs) in physics. The participant presented five statements related to normal force, tension, and weight, with their answers confirmed as accurate. Key conclusions include that the normal force acting on the suitcase is greater than its weight when a person sits on it, and that tension in a rope is less than the weight of an object when it is being pulled at a constant speed. The participant's understanding of the concepts was validated by other forum members.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of free body diagrams (FBDs)
  • Familiarity with concepts of tension and normal force
  • Basic principles of static and dynamic equilibrium
NEXT STEPS
  • Study the implications of Newton's Second Law in various scenarios
  • Learn how to accurately draw and interpret free body diagrams
  • Explore the relationship between tension and weight in different motion contexts
  • Review static versus dynamic friction and its effects on normal force
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Students preparing for physics exams, educators teaching mechanics, and anyone interested in understanding forces and free body diagrams in real-world applications.

Letra
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Homework Statement



True or False (Rope does not stretch and is massless):

1. A person sits on top of a suitcase, which is_on the floor. The magnitude of the normal force of the floor on the suitcase is equal to the weight of the suitcase.
2. A bucket of milk is being pulled directly up at a constant speed (by a rope). The magnitude of tension in rope will be less than the magnitude of the weight (of the bucket of milk).
3. A person is sliding down a vertical rope attached to the top of the gym. the person's speed is decreasing. The magnitude of tension in the rope will be less than the magnitude of the person's weight.
4. A person pulls up on the handle of a suit-case which is on the floor but the person is unable to lift it. During his effort to pull, the magnitude of the normal force of floor on the suitcase is less than the weight of the suitcase
5. A person is climbing up a vertical rope attached to the ceiling. Their speed is increasing. The FBD is correct:
sMexIyV.gif


Homework Equations

The Attempt at a Solution



1. False, Fn suitcaseonman > W suitcase

2. False, Fn = W

3. False, Fn > mg-ma

4. True, Fn < W

5. False, the W component should be less than the T component

This what I believe and I'm not sure whether I'm right or wrong and I'm practicing for a test and this was on a practice. Could anybody here verify my answers and/or correct them? Thanks!
 
Last edited:
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Everything seems kosher.
 
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Jufro said:
Everything seems kosher.

And it was. Thanks for the confirmation.
 

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