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    Force and Newton's Laws: Concise 2-Page Class 10 CBSE Notes

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    amaan 10 B
    Force and Newton's Laws: Simplified 2-page notes provide a concise yet thorough overview of the foundational principles of force and Newton's laws, specifically designed to cater to the curriculum requirements of Class 10 CBSE students.

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    © All Rights Reserved
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    Force and Newton's Laws: Concise 2-Page Class 10 CBSE Notes

    Uploaded by

    amaan 10 B
    15 views2 pages
    Force and Newton's Laws: Simplified 2-page notes provide a concise yet thorough overview of the foundational principles of force and Newton's laws, specifically designed to cater to the curriculum requirements of Class 10 CBSE students.

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    Force and Newton's Laws: Concise 2-page Class 10 CBSE Notes

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    Force and Newton's Laws: Simplified 2-page notes provide a concise yet thorough overview of the foundational principles of force and Newton's laws, specifically designed to cater to the curriculum requirements of Class 10 CBSE students.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    15 views2 pages

    Force and Newton's Laws: Concise 2-Page Class 10 CBSE Notes

    Uploaded by

    amaan 10 B
    Force and Newton's Laws: Simplified 2-page notes provide a concise yet thorough overview of the foundational principles of force and Newton's laws, specifically designed to cater to the curriculum requirements of Class 10 CBSE students.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    CHAPTER-03

    FORCE AND NEWTON's LAWs


    Corce: A push or pullon body called
    a is force. Force can change the state of rest or uniform motion or
    motion of any body. The unit of force in MKSsystem shape or direction
    is newton. It is a vector quantity.
    Force = Mass x Acceleration
    F= m a
    One newton is that force which produces an acceleration of 1ms² in a body of mass 1kg. (1N= | kg x m/s =
    1° dyne).
    Dyne is the C.G.S unit of force.
    Kg wt is the gravitational unit of Force.
    The weakest force is gravitational forces and strongest forces are nuclear forces in nature.
    The puclear forces have the shortest range and gravitational forces have the longest range.

    Balanced Forces
    Balance forces cannot change the speed of a body. They can change the shape of the object. The resultant force acting
    on a body is zero.

    Unbalanced Forces
    Unbalance forces can change the speed or direction of motion of the body. The resultant force acting on abody is not zero.
    Classification of Forces
    1. Contact forces: The contact force arises as a result of physical contact between two bodies, one by which force is
    exerted and the other on which force is exerted. For example, force of friction, force exerted by the wind, etc.
    2
    Action-at-a-distance: The force which do not involve any physical contact between two bodies but act through the
    force.
    space between them. For example, the gravitational force, the magnetic force and electric
    Inertia
    its state of rest of uniform motion along
    Inertia is the property of a body due to which the body opposes any change in There is no unit of inertia.
    a straight line. Inertia is the measure of mass. More mass means more inertia.

    Newton 's First Law of Motion


    unbalanced
    Every body remains in its state of rest of uniform motion unless it is compelled to change its state by an
    force impressed on it.

    Example:
    The first law of motion is also known as Galileo's law of inertia.

    Newton's Second Law of


    The rate of change of momentum Motion
    of a body iis directly proportional to the unbalanced force applied and takes place
    in the
    direction ofthe force.
    Force = Rate of change of momentum
    F=PP

    F=mxa

    Newton's
    To every actionThird Law anof equal
    there exists Motion
    and opposite reaction. Action and reaction always acts on different bodies.
    116 Force and Newton's Laws

    act on different bodies


    reaction forces
    and motion
    Example: each other because
    action
    andthirdlawof gives nature of forte
    balance measuresforce
    Action and reaction forces do not motion
    lawof
    First law of motion defines force, second
    body. The SI unit is kg ms!.
    Momentum momentum ofthe
    is calledthe
    The product of the mass of abody and its velocity
    It is a vector quantity.
    Speed
    Momentum = Mass x
    p=mXV

    possessed by a body.
    It isthe measure of the quantity of the motion
    Ns.
    Impulse
    is calledimpulse. SI unit of impulse is
    The product of force and time for which it is applied
    Impulse = Force x Time

    Law of Conservation of Momentum


    constant unless some external force acts On 1t.
    Ihe total momentum ofasystemn remains
    m,u, tm,4,=m, t m,,

    before cotston
    al (b)

    after colltsiort

    Conservation of momentum
    Arocket works on the principle of conservation of linear
    momentum.
    Frictional Force
    Force of friction (F) is directly proportional to the
    Friction is a self adjusting force. normal reaction (R) between the two surfaces in contact.
    Lubricants are used to reduce friction.
    In the game of carom, powder is used to decreases friction

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