1. The test will be 50 minutes in length, closed book and closed notes, calculators permitted.

2. Read both questions and put your name on each page before starting.

3. Answer both equal value questions in the spaces provided.

4. Answers must be concise, clear, and fully justified.

1. A force P acts on a corner of a frame (at A) and creates a moment about the origin (O). We know that the force P is in the y-z plane, the moment about the y-axis is -20Nm, and the moment about the z axis is -40 Nm. Find the magnitude of the moment about the x-axis.

2. Two cables (AB and AC) and a force (P) act on the top of a flag pole (AD). Find the magnitude of force P required to keep the flag pole standing? Assume that cable AB is under 5 KN of tension.

ANS. #1

ANS 2.