1:02

Wod, Jan 31\ 3.2-2 A plastic bar of diameter

d=56mm

is to be twisted by torques

T

(see figure) until the angle of rotation between the ends of the bar is

4.0\\\\deg

.\ (a) If the allowable shear strain in the plastic is

0.012rad

, what is the minimum permissible length of the bar?\ (b) If the length of the bar is

200mm

, what is the maximum permissible diameter of the bar?

3.2-2 A plastic bar of diameter d=56mm is to be twisted by torques T (see figure) until the angle of rotation between the ends of the bar is 4.0. (a) If the allowable shear strain in the plastic is 0.012rad, what is the minimum permissible length of the bar? (b) If the length of the bar is 200mm, what is the maximum permissible diameter of the bar