Engineering Mechanics 1

In the parallelogram law of vector addition, the resultant vector is represented by:

• The side opposite to the given vectors

• The diagonal of the parallelogram

• The average of the two vectors

When resolving a vector into components, the horizontal and vertical components are:

• Always equal

• Perpendicular to each other

• Parallel to each other

A vector of magnitude 10 N is inclined at 30° to the horizontal. What is the horizontal component of the vector?

• 5 N

• 10 N

• 8.66 N

Which of the following statements is true about the resultant of two vectors acting at an angle?

• It is maximum when the angle between the vectors is 180°

• It is minimum when the vectors are in the same direction

• It depends on both the magnitudes and the angle between the vectors

Which of the following is a non-contact force?

• Tension

• Friction

• Gravitational force

• Normal force