POE PLTW FINAL STUDY GUIDE
1. A quantity that has magnitude and direction is called?
Answer A vector
2. According to the figure, what is the value of the reaction force that occurs in the
vertical direction at point A?
Answer 5 lbs
3. An angle whose sin is equal to 5/13 measures?
Answer 22.6 degrees
4. What is the force of the vector in the x direction?
Answer 86.60 lbs
5. Moment of inertia is a cross-sectional property that gives the engineer an indication
of the stiffness of a particular shape. Its value can be used to?
Answer Calculate the amount of deflection that occurs in structural beams.
6. According to the image below answer the following questions (Angle ACB
1/
30
,equals 36.86 degrees) What is the magnitude of the reaction force in the x direction
at point A?
Answer 80 lbs
7. What is the magnitude of the force on member AC?
Answer 100 lbs
8. What is the magnitude of the force on member BC?
Answer 80 lbs
9. A true 2 x 6 beam (the actual dimensions are 2 inches by 6 inches) is standing upright
with the shorter side as its base. Find the moment of inertia of the beam. Lxx= bh^3/12
Answer 36 in^4
10. Given the lengths of the sides of the following triangle, what is the value of angle 0?
Answer 36.9 degrees.
11. Given the lengths of the sides of the triangle above, what is the value of y?
Answer 12
12. The x-component of the vector below would be?
2/
30
, Answer -48.2 lbs
13. The y-component of the vector above would be?
Answer 57.6 lbs
14. If another force of 10 lbs in the positive x-direction were added to vector above,
what would be the x-component of the resultant force?
Answer -38.2 lbs
15. The moment of the wrench below would be?
Answer 120 lb-in
16. Which of the following is the free body diagram for block A?
Answer Draw a inside of a square. Downward arrow FAW downward arrow A upward arrow F ??W???
17. Force and velocity are examples of?
Answer Vector quantities.
18. When the sum of the forces and moments in a structural system equal zero, that
system is said to be in a state of -fill in the blank- equilibrium?
Answer Static.
3/
30
1. A quantity that has magnitude and direction is called?
Answer A vector
2. According to the figure, what is the value of the reaction force that occurs in the
vertical direction at point A?
Answer 5 lbs
3. An angle whose sin is equal to 5/13 measures?
Answer 22.6 degrees
4. What is the force of the vector in the x direction?
Answer 86.60 lbs
5. Moment of inertia is a cross-sectional property that gives the engineer an indication
of the stiffness of a particular shape. Its value can be used to?
Answer Calculate the amount of deflection that occurs in structural beams.
6. According to the image below answer the following questions (Angle ACB
1/
30
,equals 36.86 degrees) What is the magnitude of the reaction force in the x direction
at point A?
Answer 80 lbs
7. What is the magnitude of the force on member AC?
Answer 100 lbs
8. What is the magnitude of the force on member BC?
Answer 80 lbs
9. A true 2 x 6 beam (the actual dimensions are 2 inches by 6 inches) is standing upright
with the shorter side as its base. Find the moment of inertia of the beam. Lxx= bh^3/12
Answer 36 in^4
10. Given the lengths of the sides of the following triangle, what is the value of angle 0?
Answer 36.9 degrees.
11. Given the lengths of the sides of the triangle above, what is the value of y?
Answer 12
12. The x-component of the vector below would be?
2/
30
, Answer -48.2 lbs
13. The y-component of the vector above would be?
Answer 57.6 lbs
14. If another force of 10 lbs in the positive x-direction were added to vector above,
what would be the x-component of the resultant force?
Answer -38.2 lbs
15. The moment of the wrench below would be?
Answer 120 lb-in
16. Which of the following is the free body diagram for block A?
Answer Draw a inside of a square. Downward arrow FAW downward arrow A upward arrow F ??W???
17. Force and velocity are examples of?
Answer Vector quantities.
18. When the sum of the forces and moments in a structural system equal zero, that
system is said to be in a state of -fill in the blank- equilibrium?
Answer Static.
3/
30
