Balanced and Unbalanced Force

•http://www.youtube.com/watch?v=DWCor34PzAw

What is a force?

• A force is a push or pull that causes an object to move, stop, or change direction

• In physics a force is anything that makes an object accelerate

Force and Net Force•Net force is the

total force on an object.

Balanced and Unbalanced Forces

• Forces occur in pairs and they can be either balanced or unbalanced

Unbalanced ForceBalanced Force

• Unbalanced Force can cause an object to move, stop moving, or change direction.

• The balanced forces are the forces in equal and opposite directions.

• The balanced forces are the forces in equal and opposite directions.

Balanced Forces

• Balanced forces do not cause change in motion• They are equal in size and opposite in direction• If your calculations result in zero, then its

balanced.

Unbalanced Forces

• An unbalanced force always causes a change in motion

• When unbalanced forces act in opposite directions you can find the net force– Net force

• Magnitude– The difference between the two forces

• Direction– Direction of the largest force

Unbalanced Forces

•3 N, right – 6 N, left = 3N, left

Unbalanced Forces

•4 N, left – 10 N, right = •6N, right

Unbalanced Forces

•5 N, right + 10 N, right = •15N, right

• HMM…. Can you see the unbalanced force here?

• HMM…. Can you see the unbalanced force here?

Phet Simulation

• http://phet.colorado.edu/en/simulation/forces-and-motion-basics

Force Worksheet

• Complete force worksheet with your partner.

Exit Ticket

• On a sheet of paper answer the following question:

• Calculate the force

• And share the direction

• Of the force.