Athin lamina is formed by considering the region inside the circle x 2 + y 2 = 6y and outside the circle x 2+y 2 = 9. find the center of mass of the lamina if the density at any point (in grams per meter squared) is inversely proportional to its distance from the origin.

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?