A medical technician uses a pair of four-inch-long tweezers to remove a wood sliver from a patient. The technician is applying 1 lb of squeezing force to the tweezers. If more than 1/5 lb of force is applied to the sliver, it will break and become difficult to remove.

What is the actual mechanical advantage of the system?

Using static equilibrium calculations, calculate how far from the fulcrum the tweezers must be held to avoid damaging the sliver.