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## The dynamics of newtons laws

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### The dynamics of newtons laws – PowerPoint PPT presentation

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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.