Category: Statics

• Statics Quiz: Lesson 1 (part I+ II)

1. Concurrent Forces 2. Strain 3. Modulus of elasticity. 4. 0.053″ 5. internal forces act in the opposite direction from that assumed. 6. I and II 7. 200 psi 8. unit stress at which the material continues to deform with not increase in load. 9. up to the elastic limit, unit stress is in direct…

• Thermal Stress: Find contraction and resulting stress (Example #17)

Temperature decrease of 50 degrees

• Find diameter needed for Steel Bar (Example #16)

Find required diameter if elongation not to exceed 0.005″ and find required diameter if unit stress not exceed 24,000 psi.

• Find the Strain on a steel bar (Example #15)

ksi of steel = 20,000,000 psi modulus of elasticitY = hooke’s law or young’s modulus (same thing)

f= P/A

• Find the unit tensile stress in a cable (Example #12)

Unit stress (f) is equal to the load (P) divided by the cross sectional area (A).

• Find the Centroid of the Area of a Given Shape (Example #9)

Divide into rectangles and calculate the area of each rectangle.