Vectors and Equilibrium, Conceptual Questions
This page consists of solved conceptual questions of Vectors and Equilibrium included in the new course of First Year Physics.
| S.No | Question |
|---|---|
| Question 1 | Is it possible to add three vectors of equal magnitudes but different directions to get a null vector? Illustrate with a diagram. See Answer |
| Question 2 | The magnitudes of three vectors are 2 cm, 3 cm and 5 cm, respectively. The directions are at your disposal. Can these vectors be added to yield zero? Illustrate with a diagram. See Answer |
| Question 3 | What units are associated with unit vectors, î, ĵ and k̂? See Answer |
| Question 4 | Can the scalar product of two vectors be negative? Provide a proof and give an example. See Answer |
| Question 5 | A and B are two non-zero vectors. (a) How can their scalar product be zero? And (b) how can their vector product be zero? See Answer |
| Question 6 | Suppose you are given a known non-zero vector A. The scalar product of A with an unknown vector B is zero. Likewise, the vector product of A with B is zero. What can you conclude about B? See Answer |
| Question 7 | Why a particle experiencing only one force can not be in equilibrium? See Answer |
| Question 8 | To open a door that has the handle on the right and the hinges on the left a torque must be applied. Is the clockwise or counterclockwise when viewed from above? Does your answer depend on whether the door opens towards or away from you? See Answer |
| Question 9 | Explain the warning, ‘never use a long wrench to tighten a small bolt’. See Answer |
| Question 10 | A central force is one which is always directed towards the same point. Can a central force give rise to torque about that point? See Answer |
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