Class Notes (806,520)
Canada (492,274)
Physics (247)
PHY254H1 (20)
Lecture 3

Lecture 3 - Using Newton’s Laws.pdf

5 Pages
Unlock Document

University of Toronto St. George
Stephen Morris

Using Newtons Laws Forces In the basic paradigm of classical mechanics Newtonsequation is combined with another force equation Fundamental ForcesGravity o Electromagnetic force o Maxwells equationsWeak nuclear forceStrong nuclear forceAll the fundamental forces are conservative that is they have a potential energy that is conserved throughout all motionNormal Force Another force is needed to balance gravity to stop objects from falling through each other This is the normal forceso named because it is always perpendicular to the surface the object is resting on It can be thought of as an electrostatic repulsion between objects and is what gives us the sensation of touchpressure The normal force is a contact force which means it operates at the contact surface between two objects rather than on the objects center of mass like a body force wouldNote that the normal force and gravity are not an actionreaction pair Actionreaction pairs are always on separate objects Examples of some from the situation above are pictured below
More Less

Related notes for PHY254H1

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.