ENGR 241 Exam 1 Review

What is the formula for a unit vector?

A dot product results in what type of quantity?

A cross product results in what type of quantity?

Which formula finds the moment about an axis?

What must a force be multiplied by to create a moment? (2D)

• An area

• A unit vector

• A force

• A perpendicular offset

How many equations of equilibrium do we have in 2D?

• 3

• 2

• They aren't

The net force of a couple moment is:

• 0

• always positive

• always negative

• a vector

To find the total force of a distributed load, you must multiply it by:

• A perpendicular offset

• A unit vector

• An area

• A position vector