Distance covered by a moving object versus friction in an inclined plane

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SUMMARY

The discussion centers on calculating the distance a 5 kg object travels up a 30-degree inclined plane when pushed by a force of 20.25 N, with a coefficient of kinetic friction of 0.25. The frictional force is calculated as 5.0625 N using the equation f = uN. To determine the distance traveled, one must analyze the forces acting on the object, including gravitational components and net acceleration along the plane. Key calculations involve resolving gravitational force components and applying Newton's second law to find the net acceleration.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Knowledge of trigonometric functions for resolving forces
  • Familiarity with the concept of friction and its coefficients
  • Ability to apply kinematic equations in physics
NEXT STEPS
  • Calculate gravitational force components on an inclined plane
  • Learn about Newton's second law and its application in inclined motion
  • Explore kinematic equations for motion under constant acceleration
  • Study the effects of friction on motion in physics
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Students studying physics, particularly those focusing on mechanics and inclined plane problems, as well as educators looking for examples of force analysis in real-world applications.

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Homework Statement


A 5 kg object is pushed up along a plane inclined 30 degrees from the horizontal by a force of 20.25 N. If the velocity is 2.0 m/s at the foot of the plane and the coefficient of kinetic friction between the plane and the object is 0.25, how far up the plane will the object go?


Homework Equations


f = uN


The Attempt at a Solution


f = uN
f = (0.25)(20.25 N)
f = 5.0625 N

I really don't know how to continue the solution. Do I need to use trigonometry here? I think gravity will cause the moving object to decelerate and stop at some point when it goes up. I just don't know what formulas and equations to use before I can arrive at the solution. Thanks in advance.
 
Physics news on Phys.org
20.25 N is not the normal reaction. It is the force applied to the object. Mass is given. Find the acceleration along the plane.
What is the component of mg perpendicular to the plane?
What is the component of mg parallel to the plane?
What is the magnitude and the direction of the frictional force?
What is the net acceleration up the plane?
 

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