Kinetic Friction with Blocks Need Help.

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Homework Help Overview

The discussion revolves around a physics problem involving kinetic friction and two blocks on an inclined plane. The problem specifies a coefficient of kinetic friction and asks for the acceleration of the blocks as well as the minimum friction coefficient to prevent acceleration.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the forces acting on the blocks, including normal force, weight, and tension. There is a suggestion to draw free body diagrams (FBDs) to aid in formulating equations for acceleration.

Discussion Status

The discussion is ongoing, with participants expressing confusion about how to start solving the problem. Some guidance has been offered regarding the identification of forces, but there is no clear consensus or resolution yet.

Contextual Notes

Participants are grappling with the initial setup of the problem and the relationships between the forces involved. There is an acknowledgment of the need for further clarification on the problem's requirements.

Larin
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Homework Statement


Suppose the coefficient of kinetic friction between m1 and the plane in the figure is μk=0.20, and that m1=m2=2.2kg.
a) As moves down, determine the magnitude of the acceleration of m1 and m2 given θ=28o.
GIANCOLI.ch04.p63and64.jpg


b) What smallest value of μk will keep this system from accelerating?

Homework Equations


F=ma


The Attempt at a Solution


I am not sure even where to begin.
 
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So what are the forces acting on both masses? Can you draw FBD's to help you get some equations to solve for a?
 
The normal force, the force of the weight, and the force of tension are acting on both blocks.
 
I am still really confused though...
 

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