Afatigue test was conducted in which the mean stress was 70 mpa, and the stress amplitude was 210 mpa. (a) compute the maximum and minimum stress levels. (b) compute the stress ratio. (c) compute the magnitude of the stress range

Step-by-step explanation:

Given

-------1

-------2

From equation 1 & 2 we get

(b)Stress ratio(R)=

R=

(c)Range=

Range=280-(-140)=560 MPa

the circle graph is not a function.

step-by-step explanation:

the graph of the circle is not a function.

because for a graph to be a function, each value of x must give one value of y

in the circle, the values of x for -2< x< 2 each give 2 values of y.

hence this is not a function.