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particle on wedge


markosheehan

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im stuck on question 8. the equation i got for the wedge is .6R -.5S=ma r stands for relative force of the particle s stands for relative force of the wedge . i got the equation 4mg-R=5m(.6a) for the particle where a stands for acceleration of the wedge. does anyone know where to go from here. are my equations wrong?. i drew a diagram of the forces

post-117490-0-52550300-1481457478_thumb.jpg

post-117490-0-00833800-1481457488_thumb.jpg

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The second isn't. You don't take the relative acceleration of the particle with respect to the wedge into account.

 

On closer inspection, the question seems to be missing information about the friction between wedge and particle. Ar you supposed to assume it is 0 then?

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