Friction
A block of mass 10 kg is placed on a rough horizontal surface having a coefficient of friction µ = 0.5. If a horizontal force of 100 N is applied on it, then the acceleration of the block will be (g = 10 m/s^2):
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About This Question
- Subject
- physics
- Chapter
- laws of motion
- Topic
- friction
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
5m/s2
- Limiting Friction (fl): fl=μN=μmg=0.5×10×10=50 N.
- Analysis: The applied force Fapplied=100 N is greater than the limiting friction (50 N), so the block will move.
- Net Force: Fnet=Fapplied−fl=100−50=50 N.
- Acceleration (a): a=mFnet=1050=5 m/s2.
This easy difficulty physics question is from the chapter laws of motion, covering the topic of friction. It appeared in the 2025 exam.
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