Net Force and Applied Force: Calculating Acceleration and Friction Coefficients

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SUMMARY

The discussion focuses on calculating acceleration and net force for two scenarios involving friction. In the first scenario, an 11 kg block is pushed with a force of 45 N on a flat surface, with a coefficient of kinetic friction of 0.12 and static friction of 0.15. The net force can be calculated using Newton's second law, and the acceleration can be derived from the net force divided by the mass. The second scenario involves a 12 kg box on the moon with a static friction coefficient of 0.25, requiring a specific force to initiate movement.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of friction coefficients (static and kinetic)
  • Ability to perform basic algebraic calculations
  • Familiarity with free-body diagrams
NEXT STEPS
  • Study the application of Newton's second law in various contexts
  • Learn how to calculate net force and acceleration in frictional scenarios
  • Explore the differences between static and kinetic friction
  • Investigate the effects of gravity on friction in different environments, such as the moon
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and forces, as well as educators looking for examples of friction and acceleration calculations.

Verbally
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Homework Statement



1.) An 11 kg block is being pushed forward on a flat surface with a force of magnitude 45 N. The coefficient of kinetic friction is 0.12 and the coefficient of static friction is 0.15. What is the acceleration of the object, and what is the net force acting on the object?




2.) A 12 kg box is on the surface of the moon. The coefficient of static friction between the box and the surface is 0.25. How much force is needed to get the box moving?



-I'm just a little confused on how to put all of it together, I know bits and pieces, but a solution would be nice so I can refer back to it later. - Thanks
 
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Hello, Verbally, welcome to Physics Forums!:smile:

As a newbie, you probably just glimpsed over the rules, which require you to list relevant equations and show an attempt at a solution before we can offer help. Solutions are not provided in this forum.

Try to identify all the forces acting on the block or box, and apply Newton's laws. Someone will then be glad to assist.

Thanks!:cool:
 

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