If and and are non-zero vectors, then :
1. is parallel to
2. =
3. and are mutually perpendicular
4.
There are two force vectors, one of 5N and the other of 12N. At what angle should the two vectors be added to get the resultant vector of 17N, 7N, and 13N, respectively:
1.
2.
3.
4.
If the magnitude of the sum of two vectors is equal to the magnitude of the difference between the two vectors, the angle between these vectors is:
1. 90°
2. 45°
3. 180°
4. 0°
For the given figure, which of the following is true?
1. = +
2. = +
3. = +
4. All of these
Two forces of the same magnitude are acting on a body in the East and North directions, respectively. If the body remains in equilibrium, then the third force should be applied in the direction of:
1. North-East
2. North-West
3. South-West
4. South-East
If , and the magnitudes of are 5, 4 and 3 units, respectively. Then the angle between is:
1.
2.
3.
4.
If , then which of the following is NOT correct?
1.
2.
3.
4.
A block of weight W is supported by two strings inclined at 60° and 30° to the vertical. The tensions in the strings are as shown. If these tensions are to be determined in terms of W using the triangle law of forces, which of these triangles should you draw? (block is in equilibrium) :-
1. 2.
3. 4.
At what angle must the two forces (x + y) and (x – y) act so that the resultant comes out to be ?
1.
2.
3.
4.
If the angle between the two forces increases, the magnitude of their resultant:
1. Decreases
2. Increases
3. Remains unchanged
4. First decreases, then increases