Torque
A force of 10 N is applied at a distance of 0.5 m from the axis of rotation perpendicular to the force. What is the torque?
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Solution
5 N·m
- Torque Formula: τ=r×F. In magnitude, τ=rFsinθ.
- Angle Identity: 'Perpendicular' means the angle between the position vector and force is 90∘.
- Data: r=0.5 m, F=10 N, sin90∘=1.
- Calculation: τ=0.5×10×1=5 N·m.
- Concept: Torque is the rotational analogue of force, determining the angular acceleration imparted.
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About This Question
- Subject
- physics
- Chapter
- rotational motion
- Topic
- torque
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
5 N·m
- Torque Formula: τ=r×F. In magnitude, τ=rFsinθ.
- Angle Identity: 'Perpendicular' means the angle between the position vector and force is 90∘.
- Data: r=0.5 m, F=10 N, sin90∘=1.
- Calculation: τ=0.5×10×1=5 N·m.
- Concept: Torque is the rotational analogue of force, determining the angular acceleration imparted.
This easy difficulty physics question is from the chapter rotational motion, covering the topic of torque. It appeared in the 2025 exam.
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