UPSC Exam > UPSC Questions > The S.I. unit of force is:a) Kgm/sb) Kgm/s2c...
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The S.I. unit of force is:
- a)Kgm/s
- b)Kgm/s2
- c)Newton
- d)Newton-meter
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The S.I. unit of force is:a) Kgm/sb) Kgm/s2c) Newtond) Newton-meterCo...
The correct answer is option 'C' - Newton.
Newton is the SI unit of force. It is named after Sir Isaac Newton, a renowned physicist who made significant contributions to the field of mechanics. Newton's laws of motion form the foundation of classical physics, and the unit of force was named in his honor.
Here's a detailed explanation of why the SI unit of force is Newton:
1. Definition of Force:
- Force is defined as an external agent that can change the state of motion or shape of an object.
- It is a vector quantity, which means it has both magnitude and direction.
2. Newton's Second Law of Motion:
- Newton's second law of motion states that the force acting on an object is directly proportional to the rate of change of its momentum.
- Mathematically, F = ma, where F is the force, m is the mass of the object, and a is its acceleration.
- This equation shows that force is equal to the product of mass and acceleration.
3. SI Unit of Mass and Acceleration:
- The SI unit of mass is kilogram (kg). It is the base unit for mass in the International System of Units.
- The SI unit of acceleration is meter per second squared (m/s²). It is the rate of change of velocity per unit time.
4. SI Unit of Force:
- By substituting the SI units of mass (kg) and acceleration (m/s²) into Newton's second law of motion equation (F = ma), we get the SI unit of force as kg * m/s².
- This unit is known as Newton (N).
Therefore, the SI unit of force is Newton (N), which is equivalent to kg * m/s². It represents the amount of force required to accelerate a 1 kg mass by 1 meter per second squared.
In conclusion, the SI unit of force is Newton (N), and it is derived from Newton's second law of motion, which relates force, mass, and acceleration.
Newton is the SI unit of force. It is named after Sir Isaac Newton, a renowned physicist who made significant contributions to the field of mechanics. Newton's laws of motion form the foundation of classical physics, and the unit of force was named in his honor.
Here's a detailed explanation of why the SI unit of force is Newton:
1. Definition of Force:
- Force is defined as an external agent that can change the state of motion or shape of an object.
- It is a vector quantity, which means it has both magnitude and direction.
2. Newton's Second Law of Motion:
- Newton's second law of motion states that the force acting on an object is directly proportional to the rate of change of its momentum.
- Mathematically, F = ma, where F is the force, m is the mass of the object, and a is its acceleration.
- This equation shows that force is equal to the product of mass and acceleration.
3. SI Unit of Mass and Acceleration:
- The SI unit of mass is kilogram (kg). It is the base unit for mass in the International System of Units.
- The SI unit of acceleration is meter per second squared (m/s²). It is the rate of change of velocity per unit time.
4. SI Unit of Force:
- By substituting the SI units of mass (kg) and acceleration (m/s²) into Newton's second law of motion equation (F = ma), we get the SI unit of force as kg * m/s².
- This unit is known as Newton (N).
Therefore, the SI unit of force is Newton (N), which is equivalent to kg * m/s². It represents the amount of force required to accelerate a 1 kg mass by 1 meter per second squared.
In conclusion, the SI unit of force is Newton (N), and it is derived from Newton's second law of motion, which relates force, mass, and acceleration.
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The S.I. unit of force is:a) Kgm/sb) Kgm/s2c) Newtond) Newton-meterCo...
- Push or pull of an object is considered a force. Push and pull come from the objects interacting with one another. Terms like stretch and squeeze can also be used to denote force.
- In Physics, force is defined as: The push or pull on an object with mass that causes it to change its velocity. Force is an external agent capable of changing the state of rest or motion of a particular body.
- It has a magnitude and a direction. The direction towards which the force is applied is known as the direction of the force, and the application of force is the point where force is applied.
- The Force can be measured using a spring balance. The SI unit of force is Newton(N). In physics, motion is defined as the change in position with respect to time. In simpler words, motion refers to the movement of a body. Typically, motion can either be described as:1. Change in speed2. Change in directionThe Force has different effects and here are some of them.• Force can make a body which is at rest to move.• It can stop a moving body or slow it down.• It can accelerate the speed of a moving body.• It can also change the direction of a moving body along with its shape and size.
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The S.I. unit of force is:a) Kgm/sb) Kgm/s2c) Newtond) Newton-meterCorrect answer is option 'C'. Can you explain this answer?
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