The Dynamics of Newtons Laws

- By Laken Robertson
- Dynamics are the study of forces that cause

motion.

Magnetic Force

- Magnetic forces are very large in comparison to

gravitational forces. Also, magnetic are produced

by moving electric charges.

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.

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.

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.

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.

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.

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.

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.

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

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.

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.

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.

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.