When you push a 1.95 kg book resting on a tabletop it takes 2.40 N to start the book sliding. Once it is sliding, however, it takes only 1.50 N to keep the book moving with constant speed. What are the coefficients of static and kinetic friction between the book and the tabletop?

Question

static?
kinetic?

Answer 1

2.40=muStatic*mg
1.50=muKinetic*mg
solve for each.