If a vector () is perpendicular to the vector (), then the value of
1. -1
2.
3.
4. 1
If the angle between the vector is θ, the value of the product is equal to:
1. zero
2. BA2sinθcosθ
3. BA2cosθ
4. BA2sinθ
If then angle between A and B will be:
1.
2.
3.
4.
The vector sum of two forces is perpendicular to their vector difference. In this case, the two forces:
1. Are equal
2. Have the same magnitude
3. Are not equal in magnitude
4. Cannot be predicted
The vectors are such that: .
The angle between the two vectors is:
1. \(90^\circ\)
2. \(60^\circ\)
3. \(75^\circ\)
4. \(45^\circ\)
and are two vectors and θ is the angle between them. If , then the value of θ will be:
1. 60o
2. 45o
3. 30o
4. 90o
Three forces acting on a body are shown in the figure. To have the resultant force only along the y-direction, the magnitude of the minimum additional force needed is:
1.
2.
3.
4.
Six vectors through have the magnitudes and directions indicated in the figure. Which of the following statements is true?
1.
2.
3.
4.