Where Am I Going Wrong in Calculating Minimum Coefficient of Friction?

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Homework Help Overview

The discussion revolves around calculating the minimum coefficient of friction required for a small block (m) to not slide on a larger block (M) on an incline. The problem involves analyzing forces acting on the blocks, particularly focusing on static versus kinetic friction, and the setup includes a frictionless incline.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants explore the relationship between the forces acting on the blocks, including static friction and gravitational components. There are attempts to clarify the setup through free body diagrams and discussions about the direction of forces.

Discussion Status

Several participants are engaged in questioning the assumptions made regarding the forces acting on the blocks, particularly the role of friction and the correct interpretation of the angle of the incline. There is an ongoing effort to clarify misunderstandings and refine the diagrams presented.

Contextual Notes

Some participants express urgency due to an upcoming test, indicating a time constraint that may affect the depth of discussion. There are also mentions of confusion regarding the setup and the forces involved, which highlights the need for clearer communication in the diagrams used.

  • #61
gracy said:
Actually I am running out of time.
How much time does it take to resolve a vector into two components, one horizontal and the other vertical?

Chet
 
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  • #62
Chestermiller said:
How much time does it take to resolve a vector into two components, one horizontal and the other vertical?
I have done this but not getting answer.
 
  • #63
gracy said:
I have done this but not getting answer.
Well tell us what you get for the two components of the acceleration.

Chet
 
  • #64
gracy said:
I have done this but not getting answer.
I do not see that you gave the horizontal and vertical components of the force F=mgsin(37). Recall that force is parallel with the incline, so makes 37°angle with the horizontal.
 

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