How Do You Calculate Acceleration with Rolling Friction and Force?

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SUMMARY

The discussion focuses on calculating acceleration with rolling friction and applied force using Newton's 2nd Law. A force of 1000N is applied to a 1200kg car with a rolling friction coefficient of 0.04, requiring the calculation of the car's acceleration. Additionally, the problem of determining the force needed to set an 80 lb wooden crate in motion, with a static friction coefficient of 0.5, is addressed. Participants emphasize the importance of understanding the relationship between frictional force and normal force, as well as the necessity of drawing free body diagrams for clarity.

PREREQUISITES
  • Understanding of Newton's 2nd Law of Motion
  • Knowledge of friction coefficients (static and rolling)
  • Ability to create and interpret free body diagrams
  • Basic algebra for solving equations
NEXT STEPS
  • Learn how to calculate frictional force using the formula: F_friction = μ * N
  • Study the application of Newton's 2nd Law in various scenarios
  • Explore the concept of free body diagrams in physics
  • Practice solving problems involving acceleration and friction
USEFUL FOR

Students studying physics, educators teaching mechanics, and anyone interested in understanding motion and forces in real-world applications.

reinrain
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help please I don't know what to do with this problem can someone please tell me how to solve the following problems, i need to know how to solve and get the right answers not just get the right answers.

A force of 1000N is applied to a 1200kg car if the coefficient of the rolling friction is 0.04 what is the cars acceleration?


An 80 lb wooden crate rests on a horizontal floor. if the coefficient of static force is 0.5 how much force is needed to set the crate in motion?


please help! i need the step by step solution so i will be able to solve the future problems...thank you
 
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reinrain said:
A force of 1000N is applied to a 1200kg car if the coefficient of the rolling friction is 0.04 what is the cars acceleration?

Hi reinrain,

At PF, we can't just give you the full solution, but we can certainly help you arrive at it.

Start by drawing a free body diagram and put all of the forces on the car.

How does the frictional force relate to the normal force?

Can you formulate an expression for the resultant force on the car using Newton's 2nd Law?
 

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