Physics 11 Dynamics X Mr. Jean
Jan 21, 2016
Physics 11
Dynamics X
Mr. Jean
The plan:
• Video clip of the day
• Tomorrow’s force diagram questions
• Forces & Acceleration
• 2d forces
Force Diagram:
• Tomorrow:– You will be required to draw force diagrams
for certain basic situations
– Handed in for marks
Scoring System:
• 5 pts per diagram– 2 pt proper diagram– 2 pt proper forces & variables– 1 pt proper assumptions
• Total of 4 situations
Combining Forces & Kinetics
• Understanding motion is really only accomplished once you can see how the forces interact with matter.
• Consider the following.
• Example: Old TV’s and computer monitors produce pictures by firing electrons into a screen. The viewers sees the electron as a light change and this creates the resulting image.
• TV Example: An electron with mass 9.1 x 10-31kg is accelerated from rest. Find the velocity of the electron if it experiences 5.8x10-15 N over a distance of 0.0035m.
Draw the “Force Diagram”:
What is the acceleration?
Acceleration?