Problem 544 | Friction on Wedges

Problem 544
The block A in Fig. P-544 supports a load W and is to be raised by forcing the wedge B under it. If the angle of friction is 10° at all surfaces in contact, determine the maximum wedge angle α that will give the wedge a mechanical advantage; i.e., make P less than the weight W of the block.
 

A wedge of unknown angle to give mechanical advantage

 

Solution 544

 
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