Newton’s Second Law
A 6 kg block on a smooth horizontal surface is pulled by a constant horizontal force producing an acceleration of 3 m/s². What is the magnitude of the applied force?
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About This Question
- Subject
- physics
- Chapter
- laws of motion
- Topic
- newton’s second law
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
18 N
- Newton’s Second Law: The net force acting on an object is equal to the product of its mass and its acceleration.
- Mathematical Formula: F=m⋅a.
- Identify Given Data:
- Mass (m) =6 kg
- Acceleration (a) =3 m/s2
- Calculation:
- F=6 kg×3 m/s2
- F=18 N.
- Note: Since the surface is 'smooth', there is no friction to subtract from the applied force.
This easy difficulty physics question is from the chapter laws of motion, covering the topic of newton’s second law. It appeared in the 2025 exam.
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