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The dynamics of newtons laws

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Title: The dynamics of newtons laws


1
The Dynamics of Newtons Laws
  • By Laken Robertson
  • Dynamics are the study of forces that cause
    motion.

2
Magnetic Force
  • Magnetic forces are very large in comparison to
    gravitational forces. Also, magnetic are produced
    by moving electric charges.

3
Electric Force
  • Electric forces can be very large. An electric
    force results from the electron repulsion of 2
    objects. The force between an automobiles tires
    and the road is an electric motion.

4
Gravitational Force
  • This force is the weakest of the live forces. If
    2 tennis balls are held one meter apart, the
    gravitational force between them is only
    0.00000000001 newton.

5
Weak Interaction and Nuclear Force
  • These are the action forces. They are rarely
    observed because they exist only inside the
    nucleus. A nuclear force is much stronger than
    any other force.

6
Newtons First Law
  • Newtons first law states A body continues in
    its state of rest, or of uniform motion in a
    straight line, unless it is acted upon by a net
    eternal force. This law is also called the law of
    inertia.
  • Example When you throw a ball it keeps on
    rolling until its acted upon an external force.

7
Newtons Second Law
  • Newtons 2nd law states when an unbalanced force
    acts on a body, the body will be accelerated.
  • This law is the law of acceleration. Also, an
    unbalanced force causes acceleration.
  • Example Hit a golf ball and the law goes in the
    direction you hit it.

8
Newtons Third Law
  • This law is the law of motion. It states that
    every force is accomplished by an equal and
    opposite force.
  • Example a golf ball is hit with a golf club. At
    the same time the golf club exerts a force on the
    golf ball.

9
F MA
  • This formula means Force equals an objects mass
    times acceleration.
  • Example A force gives a 2 kg mass an
    acceleration of m/sec2. This equals 5kg.

10
M F/A
  • This means that mass is equal to force dividing
    by acceleration.
  • If someone is pushing a bus with a force of 100N

11
A F/M
  • This formula means that acceleration equals an
    objects force divided by the mass.
  • A cars force divided by its mass will show
    acceleration.

12
W MG
  • This means the weight is equal to the mass times
    the gravitational pull.
  • An example of this is you weigh less on the moon
    than you do on Earth.

13
M W/G
  • Mass is found by dividing the weight of an object
    by the gravitational pull.
  • An example of this is to find the mass of a car
    can be figured out by dividing the weight and the
    gravitational pull of the car.

14
G W/M
  • This means the gravitational pull is the same
    amount as the weight divided by the mass of an
    object.
  • A trains gravitational pull is the same amount
    as dividing the weight of the train and the mass
    of the train.
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