Cam Follower Reaction Forces in Accelerating Roller Cart

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Homework Help Overview

The problem involves determining the reaction forces on cam followers of different diameters when a roller cart accelerates. The context includes the mass of the cart and the specified acceleration.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • The original poster attempts to calculate the reaction forces on the cam rollers based on the given mass and acceleration. Some participants question the application point of the force causing the acceleration and whether the calculated forces are accurate.

Discussion Status

The discussion is ongoing, with participants exploring different interpretations of the forces involved and questioning the assumptions made about the force application. Some guidance has been offered regarding listing all forces and relevant equations.

Contextual Notes

Participants are discussing the assumption that the force is applied directly below the center of gravity, which may influence the calculations of the reaction forces.

DynamicDude
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Homework Statement



Cam followers are 25mm and 32mm in diameter. Mass is 4kg. Determine the reaction forces on all of the cam rollers when cart accelerates to the right at 20 m/s^2

Homework Equations





The Attempt at a Solution


(4kg)(20m/s^2)(.05m)/(.018m) = 222 N on small roller to the right? Is there an equal but opposite force on the large roller too?

 

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Where is the force applied that is causing the acceleration?
 
assume it is applied 25mm directly below the C.G. (inline with C.G./centered between small rollers)
 
Ribbit Ribbit Ribbit...

So I guess there is no one here who knows the answer!??
 
Sorry for the delay - for some reason my standard search didn't pick up your earlier reply.
You suggest (4kg)(20m/s^2)(.05m)/(.018m). I think it's only half that.
List all the forces you believe will operate and write down any equations relating them that you can think of.
 

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