Masses in contact with each other

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SUMMARY

When three masses are in contact and a force is applied to the first mass on a frictionless surface, all masses experience the same acceleration due to Newton's second law. However, the net force acting on each mass differs if their individual masses are not equal. The net force on each mass is calculated using the formula F = ma, where 'm' is the mass of the object and 'a' is the common acceleration. Therefore, while acceleration remains constant, net forces vary based on the mass of each object.

PREREQUISITES
  • Understanding of Newton's second law of motion
  • Basic knowledge of mass and acceleration
  • Familiarity with frictionless surfaces in physics
  • Concept of net force and its calculation
NEXT STEPS
  • Study the implications of varying mass on net force calculations
  • Explore examples of systems with multiple masses and applied forces
  • Learn about friction and its effects on motion in contact systems
  • Investigate real-world applications of Newton's laws in engineering
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone interested in understanding the dynamics of mass interactions in contact systems.

e-zero
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If 3 masses are in contact with each other I understand that the acceleration is the same for all if a force is applied to the first mass. Is the net force on each object also the same? Assume no friction.
 
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e-zero said:
If 3 masses are in contact with each other I understand that the acceleration is the same for all if a force is applied to the first mass.
OK. I imagine you're thinking of something like 3 blocks in a row being pushed along a frictionless surface.

Is the net force on each object also the same?
Is the mass of each object the same?
 
No, and hence net force cannot be the same. I see! :)
 

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