SI Unit Of Force - Lesson. Science State Board, Class 10. - YaClass

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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• Subjects
• Science State Board
• Class 10
• Laws of motion
• Newton’s I, II, III and Gravitation laws

14. Units of force

Theory:

Force: Force is an external effort in the form of push or pull.

1. It produces or tries to initiates the motion of a static body.
2. It stops or tries to stop a moving body.
3. It changes or tries to change the direction of motion of a moving body.

Force has both magnitude and direction. So, it is a vector quantity. Units of force: The SI unit of force is newton (\(N\)), and in the C.G.S. system, its unit is dyne. \(1\ N\)\(ewton\) (\(N\)): The amount of force needed for a body of mass \(1\ kg\) produces an acceleration of \(1\) ms−2, \(1\) \(N\) \(=\) \(1\) \(kg\)ms−2 \(1\ dyne\): The amount of force needed for a body of mass \(1\ gram\) produces an acceleration of \(1\) cms−2, \(1\) \(dyne\) \(=\) \(1\ g\) cms−2, also \(1\) \(N\) \(=\) \(10^5\) \(dyne\) Unit force: The amount of force needed to produce an acceleration of \(1\) ms−2in a body of mass \(1\) \(kg\) is known as ‘unit force’. Gravitational unit of force: In the S.I. system of units, the gravitational unit of force is kilogram-force, represented by \(kg f\). In the C.G.S. system, its unit is \(gram force\), represented by \(g f\). \(1\) \(kg f\) \(=\) \(1\) \(kg \times 9.8\) \(m s^{-2}\) \(=\) \(9.8\) \(N\) \(1\) \(g f\) \(=\) \(1\) \(g \times 980\) \(cm s^{-2}\) \(=\) \(980\) \(dyne\) \(1\) \(kg f\) \(=\) \(1000\) \(g \times 980\) \(cm s^{-2}\) \(=\) \(980 \times 10^{3}\) \(dyne\) Previous theory Exit to the topic Next theory Send feedback Did you find an error? Send it to us! Register for free to see more content Register now Register for free to see more content Register now Copyright © 2025 YaClass Tech Private Limited Contacts Terms and Conditions Privacy Policy