Wednesday, April 1, 2009 - Block 2

Quiz on Graphical Statics Problems

Went over Analytic Solution to Statics Problems

What happens if the forces don't balance out? If the net force does NOT equal zero?
Then the object changes the way it moves, it accelerates.

This is the biggie - Newton's 2nd Law
a = Fnet/mass

Demo with cart on ramp.

Draw free-body diagram.

Calculate the force of friction, calculate the angle. Check angle measurement. It works!!

Start Hewitt video on Newton's 2nd Law.

Hand out RA 4.2 - due tomorrow