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Vector Product of Two Vectors
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| Tutorial ID | Title | Tutorial | Video Tutorial | Revision Notes | Revision Questions | |
|---|---|---|---|---|---|---|
| 2.5 | Vector Product of Two Vectors |
Cross (Vector) Product of Two Vectors Revision Questions
1. A force is acting at the given point in the beam shown in the figure.
What is the magnitude of Moment of Force M⃗ taking place in the system? Moment of force is calculated by the equation M⃗ = F⃗ × ∆x⃗. Take cos 530 = 0.6 and sin 530 = 0.8.
- 48 N×m
- 40 N×m
- 38.4 N×m
- 28.8 N×m
Correct Answer: C
2. A 20 amps current carrying wire which is 40 cm long is placed at 300 to the magnetic field lines of induction b⃗ = 0.4 T. What is the magnetic force F⃗ acting in the wire? Take cos 300 = 0.86 and sin 300 = 0.5.
- 8 N
- 3.2 N
- 1.6 N
- 0.8 N
Correct Answer: C
3. Three forces are acting on the same object placed at the origin of the coordinates system. The tip of the first force is at (1, -3, 2) and that of the second force is at (4, 0, -1). What are the coordinates of the tip of the third force vector if these three forces obey the rule of vectors' cross production?
- (3, 9, 12)
- (-3, -9, -12)
- (4, 0, -2)
- (2, -2, 0)
Correct Answer: A
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- Continuing learning vectors and scalars - read our next physics tutorial: Physics tutorials on Vectors In our next Physics tutorial, we explore Kinematics
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