Conical Pendulum and Newton's Third Law - Prof. Wolfgang Losert, Study notes of Physics

Download Conical Pendulum and Newton's Third Law - Prof. Wolfgang Losert and more Study notes Physics in PDF only on Docsity! 1 Phys171 – Fri 2/23 Chapter 8 Conical Pendulum • The object is in equilibrium in the vertical direction and undergoes uniform circular motion in the horizontal direction • v is independent of m sin tanv Lg θ θ= 2 Acceleration Tangential acceleration: Centripetal acceleration -> Total acceleration (the directions of tangential acceleration and centripetal acceleration are perpendicular) ( )22 2ω ω= = =C rva r r r 2 2 2 2 2 4 2 4α ω α ω= + = + = +t ra a a r r r α=ta r Newton’s Third Law The force F12 exerted by object 1 on object 2 is equal in magnitude and opposite in direction to the force F21 exerted by object 2 on object 1 F12 = - F21 – Action = reaction – It doesn’t matter which is considered the action and which the reaction – Deals with Interactions between TWO objects (unlike Newton’s 2nd law which looks at the forces exerted on one object)