Wood block sliding on 25 degree angle

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Homework Help Overview

The problem involves a wooden block sliding down an inclined plane at a constant velocity of 6 m/s, with the plane inclined at an angle of 25 degrees to the horizontal. The objective is to determine the coefficient of kinetic friction.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the need to identify forces acting on the block and consider the setup of a Free Body Force diagram. There are questions about how to begin the problem and find the coefficient of kinetic friction.

Discussion Status

Some guidance has been offered regarding the importance of choosing an appropriate coordinate system and identifying forces. Participants are exploring different interpretations of the problem and the necessary steps to analyze it.

Contextual Notes

There is a mention of uncertainty regarding the initial approach and calculations, as well as the need to clarify the relationship between forces acting on the block.

Gashouse
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A wooden block slides directly down an inclined plane, at a constant velocity of 6 m/s. How large is the coefficient of kinetic friction, if the plane makes an angle of 25 degrees with the horizontal?
 
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What have you done? show some work.
 
f=UN = 6(0.4) not sure how to begin with this problem and how to find the coefficient
 
First of all, what you should do in every problem of this type, is to choose an appropriate set of axis and draw the Free Body Force diagram.
In the inclined plane questions, it is easier to solve a problem if you choose the co-ordinate axis (ie, x&y axis) as along the plane and perpendicular to the plane.
Next, identify all the forces acting on the block and find the components of each force along the axis.
Since the body is not accelerating, what is the sum of the forces acting along the plane? Can you find the value of friction from this?
 

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