http://i.imgur.com/H0Cue.png
A ball of weight w rests in a wedge formed by two rigid, flat frictionless walls.

1. Use Newton'ʹs 2nd Law to find the magnitudes of the forces acting on the ball due to each of the two walls in terms of the ball's weight w.

2. What happens to these two forces as θ →90° and θ →0° ? Explain the physical significance of these two limits.

For 1, I got
ΣFx=-ncosθ + n
and
ΣFy=nsinθ - n

where n is the normal force vector.
Am I doing this correctly?

I don't have any idea about 2.
Would forces cancel out if angle goes to 90?

Question

http://i.imgur.com/H0Cue.png
A ball of weight w rests in a wedge formed by two rigid, flat frictionless walls.

1. Use Newton'ʹs 2nd Law to find the magnitudes of the forces acting on the ball due to each of the two walls in terms of the ball's weight w.

2. What happens to these two forces as θ →90° and θ →0° ? Explain the physical significance of these two limits. 

For 1, I got 
ΣFx=-ncosθ + n 
and 
ΣFy=nsinθ - n 

where n is the normal force vector.
Am I doing this correctly?

I don't have any idea about 2.
Would forces cancel out if angle goes to 90?

anonymous · Answer

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this is how I got number 1 but if I think about it, would the two normal force be the same?