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Sliding mass on sliding incline

  • Thread starter zheng89120
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  • #1
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Homework Statement



A block of mass m slides down the incline of a triangular block of mass M. The angle of inclination is [tex]\theta[/tex]. The trianguilar block is free to slide on a horizontal plane. Assume that all surfaces are frictionless. What is the acceleration of the mass M?

Homework Equations



F(net)=ma=0

The Attempt at a Solution



so basically i want to ask if my answer is correct, as i'm not familiar with this type of problem, i got:

F(horizontal) = mg cos [tex]\theta[/tex] sin [tex]\theta[/tex]
a(M, horizontal) = F(horizontal) / (m + M)

is this right?
 
Last edited:

Answers and Replies

  • #2
PhanthomJay
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Homework Statement



A block of mass m slides down the incline of a triangular block of mass M. The angle of inclination is [tex]\theta[/tex]. The trianguilar block is free to slide on a horizontal plane. Assume that all surfaces are frictionless. What is the acceleration of the mass M?

Homework Equations



F(net)=ma=0

The Attempt at a Solution



so basically i want to ask if my answer is correct, as i'm not familiar with this type of problem, i got:

F(horizontal) = mg cos [tex]\theta[/tex] sin [tex]\theta[/tex]
a(M, horizontal) = F(horizontal) / (m + M)

is this right?
Not quite. Are the accelerations of the 2 blocks the same? What about the direction of the accelerations?
 

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