ES-160 Wedges
Wedges are simple machines used to raise heavy objects. For instance...

- coefficient of friction between wall and block
- coefficient of friction between wedge and block
- coefficient of friction between wedge and floor
If the following coefficients of friction are used...

...the FBD for the block is as shown here...

The two normal forces may be found from force equilibrium equations.
The FBD for the wedge is...

The magnitude of N2 is equal in magnitude to that found from the equations for the block and opposite in direction (Newton's Third Law). Force equations may be used to determine the minimum force P to move the block.

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