How do Wedges fasten objects?

Posted on 2014-08-22
Last Modified: 2014-08-23
How to Wedges fasten objects ?   Please Explain.  

This is 3rd Grade Level Question.
Question by:naseeam
    LVL 26

    Accepted Solution

    The point of the wedge goes into a narrow gap in a set of loosely fitting objects.  Driving the wedge further into the gap pushes the objects apart and tightens the fit.  The resulting friction is what holds things together.
    LVL 26

    Expert Comment

    Clamps and vises also hold things together with friction.  But the force comes in from the outside.
    LVL 26

    Expert Comment

    A wedge is also a force multiplier.  It can provide mechanical advantage.
    Take a door stop 10 inches long and 1 inch high.  If it takes 10 lb of force to drive the wedge 1/10th of an inch into the gap, it will lift the door with 100 lb of force and move it 1/100th of an inch.

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