Please answer the questions below and show working? 1) What is the average shear
ID: 1717931 • Letter: P
Question
Please answer the questions below and show working?
1) What is the average shear stress in the internal vertical surface AB 2.(or CD), if F=20kN, and AAB=ACD=1000mm²?
a)20 N/mm²
b)10 N/mm²
c)10 kPa
d)200 kN/m²
e)20 MPa
2.What is the normal stress in the bar if P=10 kN and 500mm²?
a)0.02 kPa
b)20 Pa
c)20 kPa
d)200 N/mm²
e)20 MPa
3,The thrust bearing is subjected to the loads as shown. Determine the order of average normal stress developed on cross section through BC and D
a)C > B > D
b)C > D > B
c)B > C > D
d)D > B > C
Explanation / Answer
1) a
Stress= Force / Area = (20 X 103 ) / 1000
= 20 N/mm2
Therefore answer is " a " .
2) e
Stress= Force / Area = (10 X 103 ) / ( 500 X 10-6 ) { 1 mm2 = 10-6 m2 }
= 20 X 106 N/m2 = 20MPa
Therefore answer is " e " .
3) Diagram not given