The Dynamics of Newton's Laws Laken Robertson

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.