How Do You Calculate the Acceleration of a Crate with Kinetic Friction?

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Homework Help Overview

The problem involves calculating the acceleration of a crate being pushed across a level floor, taking into account the applied force, the angle of application, and the coefficient of kinetic friction. The context is rooted in dynamics and frictional forces.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • Participants discuss the need to show work and thoughts on the problem before receiving help. Questions are raised about the relevant concepts, such as how to relate forces to acceleration and the role of the coefficient of friction in determining frictional force.

Discussion Status

The discussion is ongoing, with some participants emphasizing the importance of demonstrating understanding and engagement with the material. There is a focus on clarifying concepts related to forces and friction, but no consensus or resolution has been reached yet.

Contextual Notes

There is a noted lack of prior instruction on the relevant topics, which may be affecting the original poster's ability to engage with the problem. Participants are encouraged to reflect on their understanding of forces and friction as they relate to the problem at hand.

physicsma1391
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I need some serious help with my homework.
I have no idea how to solve the following problem:

A 925 N crate is being pushed across a level floor by a force F of 325 N at and angle of 25 degrees above the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. Find the magnitude of the acceleration of the crate.

Please Help!
 
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You have to show some work to get help here.

If you haven't got far enough to do calculations, then at least give some thoughts on the problem. What concepts do you think apply? What laws can be used here?
 
i have no clue! my teacher never bothered to teach our class anything about this!
 
These forums are not here to help you get others to do your homework, but to get help with your homework. You have to show that you put some thought into the problem to get help here. You can't possibly know NOTHING about the problem. Have you read the section in the book on friction? Have you read the chapter on forces? You must have talked about these topics at least a tiny bit in class. Try to answer these questions to get started on the problem:

1)You are given forces and want to find the acceleration of a system. How do you find the acceleration of a system from the forces on it?

2)How does knowing the coefficient of friction help you find the friction force?
 

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