3 rd Period SI Introduction to Force Kiosk. What is Force? Force is when an object has been pushed or pulled and has been caused to interact with another.

33rdrd Period SI Period SI

Introduction to Introduction to ForceForce

KioskKiosk

What is Force?

• Force is when an object has been pushed or pulled and has been caused to interact with another object.

• To calculate force you use the equation: Force = mass * acceleration (F=m*a).

• Force is measured in Newtons

• Discovered mathematically by Sir Isaac Newton.

What is Force? (cont.)• Force is push or pull of

something• Force has magnitude and

direction

• By: Rohan Achar, Mackenzie Banks, Ronnie Parker

Some examples of force are a pulley, two magnets, and a block falling to the ground.

The Newton

The Newton, named after Isaac Newton, is the SI unit of force. It means how much force is provided to move one kilogram one meter per second per second.

Sir Isaac Newton, the Newton’s namesake.

How are Newtons Measured?

Newtons are calculated as 0.224809 pounds, commonly rounded to 0.225 pounds. The formula is

1N = 1 kg x 1m/s/s. An apple falling was part of one of Newton’s most famous discoveries: gravity!

balanced Force!

Because the vertical forces on this car are balanced, it is moving neither up or down vertically.

•Balanced force is when an object is being acted upon by two different forces of the same magnitude in opposite directions

•An object being acted upon by balanced force has a net force of zero and is considered to be in equilibrium.

•Balanced force doesn’t cause objects at rest to start moving or moving objects to slow down.

•Both constant speed and no motion are examples of balanced force.

By Adam F, Debbie H, and Shashank R

Unbalanced Force

By: Lindsey Jackson

Katie Uhl Raghav Sharma

Unbalanced Force

• An individual force without a force of equal strength in an opposite direction

• It causes acceleration

Friction is the force resistingFriction is the force resistingthe relative motion of the relative motion of

two surfaces in contact or atwo surfaces in contact or asurface in contact with a fluid.surface in contact with a fluid. By: Tanya Akl,

Danielle Margheret,& Jessica Port

Mayday, Mayday!

FRICTION PULLS FRICTION PULLS THE OPPOSITE THE OPPOSITE

WAY AN OBJECT WAY AN OBJECT MOVES.MOVES.

FRICTION IS FRICTION IS NOT NOT

FUNDAMENTAL FUNDAMENTAL SOURCE!SOURCE!

FRICTION MUST FRICTION MUST BE FOUND BY BE FOUND BY

EXPERIMENTATIOEXPERIMENTATION!N!

Static Friction

-Static Friction is when the force of friction is greater than the force that is pushing the object

-Static friction is greater that kinetic friction

-Without static friction, we wouldn’t be able to do many things we do in our everyday life. For example a table would move all over the place with out static friction.

By Erik Gustafson and Zach Ginis

This picture is an example of stactic friction. If the applied force is even with the force of gravity and friction the object will not move.

KINETIC FRICTION

-Occurs when two objects are moving while in contact with each

other

Subtypes:

1. Sliding Friction

When solids move against each other.

- Book sliding on a table (The book eventually stops sliding)

2. Fluid Friction

When solids move through a fluid.

- Water spilling on the floor (The water stops moving eventually)

•Use Lubricants

•Liquid

•Motor Oil

•Grease

•Solid

•Wax

•Gas

•Tiny holes on an air hockey table

•Replace sliding friction with rolling friction

•Smooth surfacesGroup 8: Alyssa and Bethany

•Increase roughness

•Create more traction

•Dry the surface

•Less slippery

•Increase weight of sliding object

•Increase amount of force pressing the 2 objects together

**Increase the coefficient of friction