The lever is attached to the shaft A using a key that has a width d and

Question:

The lever is attached to the shaft A using a key that has a width d and length of 25 mm. If the shaft is fixed and a vertical force of 200 N is applied perpendicular to the handle, determine the dimension d if the allowable shear stress for the key is Ï„_allow= 35 MPa.

a- - 20 mm 500 mm 200 N