Is it possible to calculate this question with force

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Homework Help Overview

The discussion revolves around a physics problem involving a block compressing a spring on a frictional surface. The parameters include the block's initial speed, mass, spring constant, and coefficient of kinetic friction, with the goal of determining the distance the block travels before coming to a stop.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the relationship between kinetic energy, potential energy, and work done by friction. There is a question about whether force can be used to calculate the distance traveled, given that the acceleration of the block changes as the spring compresses.

Discussion Status

Some participants have provided guidance on the need for proper energy expressions and indicated that multiple equations may be necessary for different phases of the problem. Others have noted that using force to calculate distance would involve integrating an equation of motion due to changing acceleration.

Contextual Notes

There is an indication that the original poster may not have the correct energy expressions and that the problem involves distinct phases that need to be addressed separately.

ILOVEPHYSIC
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Moved from a technical forum, so homework template missing.
A block with initial speed 3 meter per second compress the spring in a frictional surface. Given that the spring constant k = 11000 N/M, mass of the block= 2.5 kg, coefficient of kinetic friction= 0.4. Calculate distance d that block travel until it momentarily stopped.

This is my method

initial KE = final PE + Work done by friction

However, is it possible to use force to calculate distance d since the acceleration of block depend on the extent of how much the block compress the spring.
 
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Yes it is. Fill in the proper energy expressions (you do not yet have the right ones in your equation)

[edit] 'perhaps' :rolleyes: you will need two equations for two distinct phases in this exercise

Oh, and: dear lover, :welcome:
 
ILOVEPHYSIC said:
However, is it possible to use force to calculate distance d since the acceleration of block depend on the extent of how much the block compress the spring.
Yes, but it won't be nearly as simple as just using energy concepts. Essentially you'll have to integrate an equation of motion where the acceleration is changing with position.
 
Ah... I missed the actual question. So my reply may look somewhat weird :smile:
Thanks, Gneill, for answering that part.
 

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