nemzy
Nov25-04, 03:20 PM
here is the problem:
a 0.215 kg metal rod carrying a current of 11.8 A glides on two horizontal rails 0.460 m apart. What vertical magnetic field is required to keep the rod moving at a constant speed if the coefficient of kinetic frictin between the rod and rails is .120?
i forgot what kinetic friction is, and what the formula is..If i knew that i could easily solve tihs problem. I only have volume 2 of my physics book which doesnt go over this, and i learned this over a year ago and i forgot what it is..Can someone please refresh my memory? thanks
a 0.215 kg metal rod carrying a current of 11.8 A glides on two horizontal rails 0.460 m apart. What vertical magnetic field is required to keep the rod moving at a constant speed if the coefficient of kinetic frictin between the rod and rails is .120?
i forgot what kinetic friction is, and what the formula is..If i knew that i could easily solve tihs problem. I only have volume 2 of my physics book which doesnt go over this, and i learned this over a year ago and i forgot what it is..Can someone please refresh my memory? thanks