Conceptual Question: Block on a wedge on a frictionless surface

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SUMMARY

The discussion centers on the behavior of a block placed on an inclined plane situated on a frictionless surface. It concludes that the inclined plane will indeed move if the block exerts a force that has a component parallel to the incline, as this force results from the gravitational pull on the block. The analysis emphasizes the importance of considering both the normal force and the gravitational force acting on the block to determine the motion of the inclined plane.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Basic knowledge of forces and their components
  • Familiarity with concepts of friction and inclined planes
  • Grasp of gravitational force effects on objects
NEXT STEPS
  • Study the effects of forces on inclined planes in physics
  • Learn about static and kinetic friction coefficients
  • Explore Newton's second law in the context of multiple bodies
  • Investigate the concept of normal force in various scenarios
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone interested in understanding the dynamics of forces on inclined surfaces.

msun5040
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Homework Statement


This is more of a conceptual question, but say a block was set on top of an inclined plane, which was set on top of a frictionless level surface. Would the inclined plane move? Why or why not

Homework Equations


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The Attempt at a Solution


My thought process was that since the the surface is level, it would mean that the inclined plane would not move. However, I don't know how gravity would play into this situation.
 
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Let's say that the block had mass and the inclined plane had none - or very little.
The block is applying a force to the inclined plane that is normal to its surface. So the block is not pushing straight down on the block - it is pushing down and to the side.

So you tell me what will happen to that inclined plane.
 
You didn’t say the plane was frictionless, so you will need to consider two different cases. Either the component along the incline of the weight of the block exceeds static friction or it doesn’t.
 

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