Higher earthworm populations are achieved in conventional tillage in comparison to no-till
Indicate whether the statement is true or false
F
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The steel plate used to make one bracket weighs 5.1 pounds. A welder makes 28 brackets. What is the brackets’ total weight, in pounds?
What will be an ideal response?
If a ration is not ____________________, then an animal will not eat it
Fill in the blank(s) with the appropriate word(s).
Nuts are actually seed kernels that are housed in a woody structure
Indicate whether the statement is true or false
Problem 1.C2
A 20-kN load is applied as shown to the horizontal member ABC. Member ABC has a 10 × 50-mm uniform rectangular cross section and is supported by four vertical links, each of 8 × 36-mm uniform rectangular cross section. Each of the four pins at A, B, C, and D has the same diameter d and is in double shear. (a) Write a com¬puter program to calculate for values of d from 10 to 30 mm, using 1-mm increments, (i) the maximum value of the average normal stress in the links connecting pins B and D, (ii) the average normal stress in the links connecting pins C and E, (iii) the average shear¬ing stress in pin B, (iv) the average shearing stress in pin C, (v) the average bearing stress at B in member ABC, and (vi) the average bearing stress at C in member ABC. (b) Check your program by comparing the values obtained for d = 16 mm with the answers given for Probs. 1.7 and 1.27. (c) Use this program to find the permissible values of the diameter d of the pins, knowing that the allowable values of the normal, shearing, and bearing stresses for the steel used are, respectively, 150 MPa, 90 MPa, and 230 MPa. (d) Solve part c, assuming that the thickness of member ABC has been reduced from 10 to 8 mm.