How Does Friction Affect a Small Block on a Moving Incline?

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SUMMARY

The discussion focuses on calculating the horizontal force required to prevent a small block (0.5 kg) from slipping down a moving incline (50 degrees) on a larger block (5 kg) with a static friction coefficient of 0.6. The key challenge is accounting for the incline's motion, as the larger block is moving on a frictionless table. Participants emphasize the need for clarity regarding the direction of the applied force and the setup of the problem to arrive at the correct solution, which is approximately 2 N.

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Homework Statement


A small block of mass .5kg sits on a large block of mass 5kg as shown. The coefficient of static friction between the blocks is .6, but between the large block and the table there is no friction. What horizontal force will keep the small block from slipping down the incline if the angle is 50 degrees.


Homework Equations



How do I take into account the incline is also moving?


The Attempt at a Solution



I set up a Ff< mew(sum of forces)

I solved for F, but did not get the right answer which should be around 2
 
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Hi countryapple, welcome to PF.
The problem is not clear. You have mentioned the table and inclined plane. On which the larger block is moving? To which the horizontal force is applied. If you can provide the figure the problem will be clear.
 

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