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newtons laws


the dynamics of newtons laws – PowerPoint PPT presentation

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Title: newtons laws

The dynamics of Newton's laws
  • By Karlee Pruitt!!D

Magnetic force
  • Magnetic force, like electric forces, are very
    large in comparison to gravitational forces.
    Magnetic forces are produced by moving electric

Electric forces
  • Electric forces can be very large.
  • If one extra electron can be added to each of the
    atoms in the two tennis balls, the resulting
    electric forces between them would be
    500,000,000,000,000,000,000 Newton's.

Gravitational forces
  • Gravitational force is an extremely weak force in
    comparison to the other forces. If two tennis
    balls are held one meter apart, the gravitational
    force between them is only 0.000 000 000 01

Weak interaction and nuclear force
  • Nuclear forces are much stronger than any other
    force. The nuclear force holds the nucleus of an
    atom together in spite of the strong electric
    force of repulsion between its protons. When this
    happens, a huge amount of nuclear energy is

Newton's first law and how its in peoples life
  • a body continues in its state of rest, or of
    uniform motion in a straight line, unless it so
    acted upon by a net external force. For example
    in today's life, a car that is sitting still (no
    motion) is acted upon by another force of another
    car can mace it move if it comes in contact with
    the first car.

Newtons second law and how its in peoples life.
  • the rate of change of momentum is proportional
    to the imposed force and goes in the direction of
    the force. Aexample is a train wreck. If a train
    hits another train of equal force and speed, they
    will both go the same distance and feel the same
    force. But if the first train is hooked to a
    second, the single train will go twice the
    distance of the double train and will feel twice
    the force.

Newtons 3rd law and examples of it every day life
  • For every action there is an equal and opposite
    reaction. When sitting on a chair, your body
    exerts a force on the chair and the chair exerts
    an equal force back if the chair didn't exert the
    same force you would fall on your butt

FMA (ex)
  • F ma lets us work out the forces at work on
    objects by multiplying the mass of the object by
    the acceleration of the object.
  • Example The force at work on a Formula 1 car as
    it starts a race! If the F1 car has a Mass of
    600kg and an Acceleration of 20m/s/s then we can
    work out the Force pushing the car by
    multiplyingthe Mass by the Acceleration like
    this 600 x 20 12000N.

MFA (ex)
  • Weight (force) FMass ma acceleration (due to
    gravity)F mam/F 1/aMass divided by
    weight reciprocal of acceleration due to
  • For example people on earth.

AF/A (ex)
  • m is the mass, f is the force and a is the
    acceleration (deceleration if negative).The
    equation is a re-arranged form of the equationF
    ma (force mass times acceleration) Working
    out how much force is used to push a F1 car when
    broken down or run out of fuel
  • If the car has a mass of 700kgAnd a driver
    pushes the car with an acceleration of
    0.05m/s/sThenF MAForce 700kg x
    0.05m/s/sForce 35kN (kiloNewtons)?

  • where m is the mass of the object see reference
    1 for a discussion of how to define mass.
    Meanwhile, g is the vector representing the local
    gravitational acceleration. This is also called
    the gravitational field (in analogy to electrical
    field, magnetic field, et cetera). We define g
  • g the acceleration of a freely-falling test

  • To fine mass you have to take weight and divide
    it by gravity.

  • To fine gravity you half to divied we.ight to
    find the mass