Help with Translational Motion Homework

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SUMMARY

The discussion centers on the calculation of the frictional force necessary to decelerate translational motion of a roller, specifically in the context of a roller with a known total frictional force of 145 N. The user seeks clarification on the formula for deceleration in translational motion, while noting the existing understanding of deceleration in rotary motion as Ia/r². The conversation highlights the distinction between translational and rotary motion and questions the role of friction in the deceleration of rolling objects.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Familiarity with the concepts of friction and deceleration
  • Knowledge of rotational dynamics, specifically the moment of inertia (I)
  • Basic algebra for manipulating equations
NEXT STEPS
  • Research the formula for translational deceleration, specifically F = ma
  • Study the relationship between frictional force and rolling motion
  • Explore the concept of moment of inertia in greater detail
  • Learn about the differences between static and kinetic friction in rolling objects
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and dynamics, as well as educators looking for examples of translational and rotational motion concepts.

Jane1948
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Homework Statement



I know the total frictional force required to stop a roller is 145 N, I know the frictional force required to decelerate rotary motion is Ia/r2. But I don't know the formula to decelerate translational motion of the roller. Help!

Homework Equations





The Attempt at a Solution

 
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Deceleratin is just acceleration with a negative acceleration!
 
Welcome to PF!

Jane1948 said:

Homework Statement



I know the total frictional force required to stop a roller is 145 N, I know the frictional force required to decelerate rotary motion is Ia/r2. But I don't know the formula to decelerate translational motion of the roller. Help!

Hi Jane1948! Welcome to PF! :smile:

(:wink: And happy 60th birthday? :wink:)​


What sort of roller is this?

Is this a groundsman's roller, that works much like a wheelbarrow?

If so, I don't see where the friction comes in, since rolling things (without slipping) shouldn't be slowed down by friction with the ground. :confused:
 

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