Problem $2$:

For the class $9$ non$-$Grashof linkage from our class handout, determine the limiting angles for ${}_2$

and ${}_4$ as shown below. Hint: The limiting angles for ${}_2$ are not symmetric!

Problem $3$:

Consider the clamp at

right for holding a piece of

material for machining

processes. All dimensions

are in mm $.$ Is the linkage

Grashof? Does it matter

for this mechanism?

Explain your answer.