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Newton's laws of motion imp formulas for jee mains


Rani Thalakanti 18th Sep, 2024
Answer (1)
Kanishka kaushikii 18th Sep, 2024

Newton's Laws of Motion are fundamental to understanding the motion of objects. Here are the key formulas and concepts for JEE Mains:

Newton's First Law of Motion (Law of Inertia):

  • An object at rest will remain at rest, and an object in motion will continue to move in a straight line with constant speed, unless acted upon by an unbalanced force.

Newton's Second Law of Motion:

  • The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

  • Formula: F = ma
    • F: Net force (N)
    • m: Mass of the object (kg)
    • a: Acceleration of the object (m/s²)


    Newton's Third Law of Motion (Law of Action and Reaction):

    • For every action, there is an equal and opposite reaction.


    Important Formulas and Concepts:

    • Weight: W = mg
      • W: Weight of the object (N)
      • m: Mass of the object (kg)
      • g: Acceleration due to gravity (9.8 m/s²)
    • Friction: The force that opposes the relative motion between two surfaces in contact.
      • Static friction: Fs ≤ μsN
      • Kinetic friction: Fk = μkN
        • μs: Coefficient of static friction
        • μk: Coefficient of kinetic friction
        • N: Normal force
    • Tension: The force transmitted through a string, rope, or cable when it is pulled taut.
    • Normal force: The force exerted by a surface on an object in contact with it, perpendicular to the surface.
    • Centripetal force: The force that causes an object to move in a circular path.
      • Fc = mv²/r
        • Fc: Centripetal force (N)
        • m: Mass of the object (kg)
        • v: Velocity of the object (m/s)
        • r: Radius of the circular path (m)


    These formulas and concepts are essential for understanding Newton's Laws of Motion and solving problems related to mechanics in JEE Mains. Practice solving a variety of problems to solidify your understanding and improve your problem-solving skills.


    I hope it helps !!

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