Solve Strange Problem: Beginner's Guide

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Homework Help Overview

The discussion revolves around a physics problem involving forces and motion, specifically addressing the dynamics of a ball on an inclined block. Participants are exploring foundational concepts related to Newton's laws of motion and equilibrium conditions.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants express uncertainty about how to start the problem and seek guidance on the relevant principles. Some suggest beginning with Newton's second law and considering simpler scenarios to build understanding. Others inquire about setting up force equations in different directions.

Discussion Status

The discussion is ongoing, with participants providing various approaches and suggestions. Some guidance has been offered regarding the application of Newton's laws, but no consensus or complete solution has been reached yet.

Contextual Notes

Participants mention difficulties with the problem's presentation and express a need for clarity in the problem setup. There is an indication of a test preparation context, which may influence the urgency and approach to the discussion.

bluff
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Can someone tell me how to do this problem? I Don't even know where to begin.
 

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Begin with F=m*a.
You should use that, and the fact that the resultant of that force and of m*g is along the normal to the surface in the equilibrium position.
 
Last edited:
Consider a simpler problem first: The ball on block with a constant incline. Assume the block is accelerated towards the +x direction and that the ball is not moving vertically on the block.

The ball will experience two forces: Its weight and a normal force coming from the incline W,\ N . Assume the incline is at an angle \theta w.r.t. the horizontal. What can you say that the acceleration will be given by in such a situation?
 
Can you set up the force equations in the x- and y-directions using Newton's second law?

That is: "The sum of the force components on an object in the x (or y) direction is equal to its mass times its acceleration in the x (or y) direction"
 
Thanks for the help guys. I still couldn't get it, though. I'll give it another crack soon for test preparation.
 

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