[4 pts] 1) Garlic Press A garlic press is based upon the lever providing a mechanical advantage

to an input force that is further away from the pivot/hinge than the garlic, so that there's

sufficient output force between the garlic and the press. A diagram is shown in Figure 1.

• Focus on the top half--the bottom half can be thought of as fixed to the ground.

• The arm pivots about the left hinge.

Pivot

Dinput

Foutput

Garlic

input

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Figure 1. Garlic Press Arm System

A. Draw a free body diagram of the top/lever part of the press and the forces on it to represent

this system. Label the relevant forces and the rotation point. You may treat all forces the as

perpendicular to the lever of the garlic press.

B. Assume that the distance Dinput = 4.0", and the force Finput is 5 lb. Consider the system to be

in rotational equilibrium and the sum the moments (M = 0) to find the force Foutput that

results on the clove of garlic.

C. Suppose the garlic clove requires a force of 40 lb to be pressed. If Dinput is at 4.0", what input

force is required?

D. A manufacturer wants to design an ergonomic garlic press that only requires 5 lb to operate.

If the garlic clove requires 40 lb to be pressed, how long must the handle (Dinput) of the

ergonomic press be?