Coefficient of friction equations:

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Homework Help Overview

The discussion revolves around a physics problem involving a block being pushed along a ceiling with a constant applied force. The subject area includes dynamics and friction, specifically focusing on calculating the coefficient of kinetic friction given certain parameters such as mass, applied force, acceleration, and gravitational acceleration.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to apply known values and equations but expresses uncertainty about incorporating acceleration into their calculations. Some participants suggest using a diagram to clarify the problem setup and relationships between forces.

Discussion Status

The discussion is ongoing, with participants exploring different approaches to the problem. There is a request for the original poster to share their diagram and equations to facilitate further assistance. Guidance has been offered regarding the need to show attempts as per forum guidelines.

Contextual Notes

The original poster is under time pressure due to an impending deadline, which may influence their approach to the problem. There is also a note about the post being in the wrong forum, indicating a potential misunderstanding of the forum's structure.

chubbaf
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i need help bad. i have a deadline that i need to complete very soon. please if anyone can help. i know i don't have the right answer:

a 4.40 kg block is pushed along the ceiling with a constant applied force of 89.0 N that acts at an angle of 66.0 degrees with the horizontal. the block accelerates to the right at 6.80 m/s^2. the acceleration of gravity is 9.81 m/s^2. what is the coefficeint of kinetic friction betweeen the block and the ceiling.

m = 4.4 kg
a = 6.80 m/s^2
fp = 89 N @ 66.0 degrees
g - 9.81 m/s^2

HELP
 
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This is posted in the wrong forum. Do not double post, this one will be moved.

Well now that you've written all the known values. What can you do make your life easier in terms of getting to the formula? Mayb drawing a diagram and labeling? Mayb the 66 degrees is a give away that your diagram must include a triangle of some sort?
 
i have a diagram already. it does indeed form a triangle. i tried every equation i can think of and work out. i used the cos and sin to find the normal force and friction yet i don't know how to use the acceleration within the equations.
 
Perhaps you could post the diagram if possible and give us the equations you have so far. Please note that in order to receive further help, you must show your attempt(s) as per the guidelines.
 
Last edited:

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