Newton's Laws — Pushing a box horizontally on a surface

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Homework Help Overview

The discussion revolves around applying Newton's laws to determine the acceleration of a box being pushed horizontally on a surface, given specific forces acting on it.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants explore the application of Newton's second law, questioning whether the net force can be calculated by subtracting the friction force from the applied force and dividing by the mass of the box.

Discussion Status

Some participants express uncertainty about the process, while others confirm the appropriateness of using Newton's second law for the problem. There is a suggestion of a specific calculation method, but no consensus on the final answer has been reached.

Contextual Notes

The problem involves specific forces and mass values, and participants are working within the constraints of Newton's laws without additional context or information.

adams_695
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Homework Statement
You apply a force of 12.8 N horizontally to a 490 g box that is at rest on a horizontal surface. The friction force between the box and table is 11.2 N. What is the magnitude of the acceleration of the box? (answer to two decimal places. Use m/s^2 as units)
Relevant Equations
Newtons Laws
unsure what process to tackle it.
 
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adams_695 said:
Problem Statement: You apply a force of 12.8 N horizontally to a 490 g box that is at rest on a horizontal surface. The friction force between the box and table is 11.2 N. What is the magnitude of the acceleration of the box? (answer to two decimal places. Use m/s^2 as units)
Relevant Equations: Newtons Laws

unsure what process to tackle it.
Which of Newton’s laws looks appropriate?
 
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haruspex said:
Which of Newton’s laws looks appropriate?

would say second Law. am I right in stating that it's just as simple as the 12.8 - 11.2N friction then dividing by .490kg mass?

which rounded to two decimals equals 3.27m/s^2?
 
adams_695 said:
would say second Law. am I right in stating that it's just as simple as the 12.8 - 11.2N friction then dividing by .490kg mass?

which rounded to two decimals equals 3.27m/s^2?
Yes.
 
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haruspex said:
Yes.

thank you
 

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