Upcoming SlideShare
×

# Balanced and Unbalanced Forces

2,305 views
2,014 views

Published on

Ms. Parker's notes on October 3, 2011 over free body diagrams and balanced/unbalanced forces.

Published in: Technology, News & Politics
1 Like
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

Views
Total views
2,305
On SlideShare
0
From Embeds
0
Number of Embeds
3
Actions
Shares
0
0
0
Likes
1
Embeds 0
No embeds

No notes for slide

### Balanced and Unbalanced Forces

1. 1. <ul><li>What happens when an unbalanced force acts on an object? </li></ul><ul><ul><li>the object accelerates </li></ul></ul><ul><li>When two forces act on an object at the same time, the direction as well as the magnitude of the force determine the motion (including direction) of the object </li></ul>
2. 2. <ul><li>If the two forces are in the same direction, the sum of the forces (net force) will cause a larger acceleration than either force on its own </li></ul>
3. 3. <ul><li>If the two forces are in opposite directions then the net force could be zero – in which case there would be no acceleration </li></ul><ul><li>OR </li></ul><ul><li>the sum of the two forces will result in a net force in one direction </li></ul>
4. 4. <ul><li>Draw a free body diagram that you think would represent two forces in opposite directions that would result in no net force (and thus, no acceleration) </li></ul>
5. 5. <ul><li>Draw a free body diagram with two forces in opposite directions that would result in a net force (and acceleration) </li></ul>
6. 6. <ul><li>It ’s really, really important to remember: </li></ul><ul><li>a net force results in acceleration </li></ul><ul><li>BUT </li></ul><ul><li>no net force does not mean no motion – an object will move at a constant speed in a straight line with no net force!!! </li></ul>
7. 7. <ul><li>What if the forces aren ’t in line with each other? </li></ul>