Several students absent due to band trip.
Students worked on CD 4.3, CD 5.1. When done they could work on homework packet for tomorrow on Newton's Laws.
Gyroscopic stability with plates.
Monday, March 31, 2008
Friday, March 21, 2008
Friday, March 21, 2008
Quiz on Analytic Method of solving statics problems.
Went over quiz.
Magic Tube
Checked and stamped RA 4.2 for completeness. Went over RA 4.2. Collected RA 4.2.
Handed out packet on Newton's 2nd Lab (problem solving strategy + 10 problems). Due the Tuesday after Spring Break.
Have a GREAT SPRING BREAK!
Went over quiz.
Magic Tube
Checked and stamped RA 4.2 for completeness. Went over RA 4.2. Collected RA 4.2.
Handed out packet on Newton's 2nd Lab (problem solving strategy + 10 problems). Due the Tuesday after Spring Break.
Have a GREAT SPRING BREAK!
Thursday, March 20, 2008
Thursday, March 20, 2008
Quiz on graphical solution of statics problems.
Went over homework sheet on analytic solution of statics problems.
Quiz tomorrow on analytic solution of statics problems.
Went over front side of Free-Body diagram worksheet.
Handed out RA 4.2, due tomorrow.
Went over homework sheet on analytic solution of statics problems.
Quiz tomorrow on analytic solution of statics problems.
Went over front side of Free-Body diagram worksheet.
Handed out RA 4.2, due tomorrow.
Wednesday, March 19, 2008
Wednesday, March 19, 2008
Handed back and went over RA 4.1, Inertia Quiz, Statics Lab
Handed out sheet on drawing construction to solve statics problems with masses and strings.
Showed graphical example on white board. Gave students a practice problem to solve graphically. Went over example.
Went over an analytic solution.
For homework, students will do the four problems on the worksheet.
Quiz tomorrow on graphical method.
Handed out sheet on drawing construction to solve statics problems with masses and strings.
Showed graphical example on white board. Gave students a practice problem to solve graphically. Went over example.
Went over an analytic solution.
For homework, students will do the four problems on the worksheet.
Quiz tomorrow on graphical method.
Tuesday, March 18, 2008
Tuesday, March 18, 2008
Collected RA 4.1
Students did the Statics Lab - due at the end of the period.
Handed out Free Body Diagram worksheet for homework due tomorrow. Asked students to do it in pencil since some of them are difficult.
Students did the Statics Lab - due at the end of the period.
Handed out Free Body Diagram worksheet for homework due tomorrow. Asked students to do it in pencil since some of them are difficult.
Monday, March 17, 2008
Monday, March 17, 2008 - St Patrick's Day
Went around room asking students what they told their parents about last Wednesday's Inertia Labs. Some students made the potato head for parents and took pictures for extra credit.
Students explained the two cases for the pulling string mini-station. Discussed which was due to weight and which was due to inertia.
Collected write-ups.
A force is simply a push or a pull.
Explained what is meant by a net force - vector sum of all forces acting on an object.
Introduced Newton's First Law of Motion: If there is no net external force acting on an object, an object at rest remains at rest and an object in motion keeps moving in a straight line with constant speed.
Constant velocity means NO NET FORCE.
Mass, measured in kg, is a measure of inertia. If you toss an object from hand to hand you are measuring its inertia.
Volume and weight are NOT the same as mass.
Weight, measured in Newtons, is the force of gravity on an object. If you hold an object in your hand, you are measuring its weight.
A mass of 1 kg weighs 10 N at the surface of the Earth. It also weighs about 2.2 lbs. One Newton is about the same as 0.22 lbs ~ 0.25 lbs. Therefore, instead of ordering a quarter pounder, you could order a Newtonburger.
Problem of who has more gold - 100 lbs of gold on Earth or 100 lbs of gold on Moon.
Quiz on inertia.
Normal is a mathematical term meaning perpendicular to a surface. A normal force, which you only have with a surface (NOT with strings) is the force perpendicular to that surface.
Introduced the idea of free body diagrams. Isolate an object and show only the external forces that act on that object. You do NOT show velocity vectors, etc. or any forces that that object exerts on something else. Did a few examples of drawing free body diagrams.
Did some examples in statics.
Handed out RA 4.1 due tomorrow.
Students explained the two cases for the pulling string mini-station. Discussed which was due to weight and which was due to inertia.
Collected write-ups.
A force is simply a push or a pull.
Explained what is meant by a net force - vector sum of all forces acting on an object.
Introduced Newton's First Law of Motion: If there is no net external force acting on an object, an object at rest remains at rest and an object in motion keeps moving in a straight line with constant speed.
Constant velocity means NO NET FORCE.
Mass, measured in kg, is a measure of inertia. If you toss an object from hand to hand you are measuring its inertia.
Volume and weight are NOT the same as mass.
Weight, measured in Newtons, is the force of gravity on an object. If you hold an object in your hand, you are measuring its weight.
A mass of 1 kg weighs 10 N at the surface of the Earth. It also weighs about 2.2 lbs. One Newton is about the same as 0.22 lbs ~ 0.25 lbs. Therefore, instead of ordering a quarter pounder, you could order a Newtonburger.
Problem of who has more gold - 100 lbs of gold on Earth or 100 lbs of gold on Moon.
Quiz on inertia.
Normal is a mathematical term meaning perpendicular to a surface. A normal force, which you only have with a surface (NOT with strings) is the force perpendicular to that surface.
Introduced the idea of free body diagrams. Isolate an object and show only the external forces that act on that object. You do NOT show velocity vectors, etc. or any forces that that object exerts on something else. Did a few examples of drawing free body diagrams.
Did some examples in statics.
Handed out RA 4.1 due tomorrow.
Thursday, March 13, 2008
Wednesday, March 12, 2008
Went over Projectile Motion and Vector test.
Demonstrated inertia mini-labs.
Students did the inertia mini-labs.
Students will write-up the pulling mass on string lab. Explain what you did, what was the result, and which case illustrates weight and which illustrates inertia.
Extra credit if students bring in a picture of a parent wearing the potato head.
Demonstrated inertia mini-labs.
Students did the inertia mini-labs.
Students will write-up the pulling mass on string lab. Explain what you did, what was the result, and which case illustrates weight and which illustrates inertia.
Extra credit if students bring in a picture of a parent wearing the potato head.
Tuesday, March 11, 2008
Tuesday, March 11, 2008
Test on Projectile Motion and Vectors.
Checked Career Pathways Summit forms for extra credit.
No homework tonight.
Checked Career Pathways Summit forms for extra credit.
No homework tonight.
Monday, March 10, 2008
Monday, March 10, 2008
Apparently I made a mistake and set the deadline for the WebAssign to be 10 AM on Sunday instead of 10 PM. As a result only 5 students submitted any answers. To cover the material, I gave the students 30 min in class to work on the exercises and problems and then went over them, embellishing them.
Test tomorrow. There will be a multiple choice section, short answer including graphical addition and resolution of vectors, and problems. In the problems there will be an analytic addition of vector type problem, a rocket projectile problem, a relative velocity problem, and maybe a couple others.
Test tomorrow. There will be a multiple choice section, short answer including graphical addition and resolution of vectors, and problems. In the problems there will be an analytic addition of vector type problem, a rocket projectile problem, a relative velocity problem, and maybe a couple others.
Friday, March 7, 2008
Friday, March 7, 2008
Handed back Rocket 2 Labs. Forgot to go over conclusion section.
Showed ballistic cart demo. Mr. Holmes has the coolest toys.
Went over vectors on board.
Review and work day. Students worked on problem worksheet.
WebAssign Review is due Sunday at 10 pm.
Showed ballistic cart demo. Mr. Holmes has the coolest toys.
Went over vectors on board.
Review and work day. Students worked on problem worksheet.
WebAssign Review is due Sunday at 10 pm.
Thursday, March 6, 2008
Thursday, March 6, 2008
Workday:
Students corrected some problems in Rocket 2 Lab Calculations
Students worked on Supplemental Problems Worksheet.
Test on Tuesday of next week, March 11
Students corrected some problems in Rocket 2 Lab Calculations
Students worked on Supplemental Problems Worksheet.
Test on Tuesday of next week, March 11
Wednesday, March 5, 2008
Wed, March 5, 2008
Rocket Trajectory Quiz.
Went over quiz
IB Projectile Motion Rocket Quiz.
Went over quiz
Handed back CD 3.2, first rocket projectile quiz, analytic addition of vector quiz.
Showed the rest of the Hewitt video on Vectors and Projectile Motion. Explained why objects in free fall are "weightless" even though there is a force of gravity on them. Astronauts in the space shuttle appear weightless because they are falling around the Earth.
Hit the Bar write-up due Friday
Test on Projectile Motion next Tuesday.
Went over quiz
IB Projectile Motion Rocket Quiz.
Went over quiz
Handed back CD 3.2, first rocket projectile quiz, analytic addition of vector quiz.
Showed the rest of the Hewitt video on Vectors and Projectile Motion. Explained why objects in free fall are "weightless" even though there is a force of gravity on them. Astronauts in the space shuttle appear weightless because they are falling around the Earth.
Hit the Bar write-up due Friday
Test on Projectile Motion next Tuesday.
Tuesday, March 4, 2008
Tuesday, March 4, 2008
Collected Rocket Lab 2 reports
Hit the Bar Lab
Unfortunately interrupted by yet another false fire alarm
Student who did not hit the bar all three times need to write up those portions of the lab they missed. Start with a data table with ALL the information from Competition 1 and the data from the competition(s) they missed. Show all relevant calculations in a form that is easy for me to follow. This write-up is due on Friday.
Hit the Bar Lab
Unfortunately interrupted by yet another false fire alarm
Student who did not hit the bar all three times need to write up those portions of the lab they missed. Start with a data table with ALL the information from Competition 1 and the data from the competition(s) they missed. Show all relevant calculations in a form that is easy for me to follow. This write-up is due on Friday.
Monday, March 3, 2008
Monday, March 3, 2008
Asked if any questions on Rocket 2 Lab due tomorrow.
Projectile motion quiz with rocket (1 page). Students went over quiz on board. Showed how to sketch in vx, vtot, and vy.
Lecture on Relative Velocity
Po Boy example
Relative Velocity Equation
Examples of boat crossing stream heading straight across and then actually traveling straight across. Example of plane flying though air.
Examples:
Plane taking off (into the wind to maximize lift)
Plane landing (into the wind to minimize runway distance)
Rain streaks on car window
Handed out RA 3.1 - ran out, will hand out rest tomorrow. Due Wed
Work on problems from worksheet
Tomorrow we do the Hit the Bar Lab - prepare your calculations.
Projectile motion quiz with rocket (1 page). Students went over quiz on board. Showed how to sketch in vx, vtot, and vy.
Lecture on Relative Velocity
Po Boy example
Relative Velocity Equation
Examples of boat crossing stream heading straight across and then actually traveling straight across. Example of plane flying though air.
Examples:
Plane taking off (into the wind to maximize lift)
Plane landing (into the wind to minimize runway distance)
Rain streaks on car window
Handed out RA 3.1 - ran out, will hand out rest tomorrow. Due Wed
Work on problems from worksheet
Tomorrow we do the Hit the Bar Lab - prepare your calculations.
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