ESG 360 Quiz 1 practice

What is the resultant of two vectors?

• Their sum

• Pick the other answer

A vector has components 2i+3j-2k. What is its magnitude?

•  $\sqrt{17}$  

• 7

•  $\sqrt{7}$  

• 3

The acceleration due to gravity in English units

• 9.81 m/s²

• 32.2 ft/s²

• 9.81 ft/s²

• 32.2 m/s²

Find the x-component of vector Q.

• 54.4 N

• 42.4 N

• 60 N

• 25.4 N

Find the y-component of the resultant of P and Q.

• 100 N

• 56 N

• 39 N

• 63 N

For the FBD shown, the moment about A due to the 9.81kN force is calculated by

• -9.81 kN x 2 m

• +9.81 kN x 4 m

• +9.81 kN x 2 m

• -9.81 kN x 6 m

For the FBD shown, the moment about B due to the 9.81kN force is calculated by

• -9.81 kN x 2 m

• +9.81 kN x 4 m

• +9.81 kN x 2 m

• -9.81 kN x 1.5 m

For the beam shown, the moment about B due to the 6-kips forces is

• Counterclockwise

• Clockwise

The loading shown can be split into a rectangle and a triangle. The centroid of the rectangular load is

• 5" from either side

• 4" from A

• 6" from B

• 2" from B

The centroid of a rectangle is

• (b/2, h/2)

• Pick the other answer