Question

Why is a wedge one of the least efficient simple machines

Answer 1

The wedge is an adaptation of the inclined plane. It can be used to raise a heavy load over a short distance or to split a log. The ideal mechanical advantage (IMA) of a wedge depends on the angle of the thin end. The smaller the angle, the less the force required to move the wedge a given distance through, say, a log.

Answer 2

A wedge is considered to be one of the least efficient simple machines because: friction uses much of the effort required.

Friction can be defined as a force that resists the relative motion of two objects when there surface comes in contact.

Also, friction usually reduces the efficiency and mechanical advantage of simple machines such as a wedge.

However, the effect of friction on a simple machine such as a wedge can be reduced through lubrication.

In conclusion, a wedge is considered to be one of the least efficient simple machines because friction uses much of its effort required.

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