MCQs Vectors and equilibrium first year physics||KP and Federal Boards
Автор: Physics with Atif Waqas
Загружено: 2022-01-06
Просмотров: 1500
Описание:
1) Two vectors lie with their tail at the same point. When the angle between them is increased by 20 degree their scalar product has same magnitude but changes from positive to negative. The original angle between them was:
2) The minimum number of vectors of unequal magnitude required to produce a zero resultant is:
3) The resultant of two vectors, each of magnitude A is also a magnitude of A. The angle between the two vectors be:
4) The magnitude of vector A=2i+j+k is
5) When Fx = 3 N and F = 5 N then Fy =
6) A meter stick is supported by a knife edge at the 50 cm mark. Arif hangs mases of 0.40 kg and 0.60 kg from the 20 cm and 80 cm points, respectively. Where should Arif hang the third mass of 0.30 kg to keep the stick balanced?
7) If Ax = 1.5 cm, Ay = -1.0 cm , into which quadrant does the vector A point?
8) A . ( A x B) = ?
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