Mechanics11/Seite14/Loesung5.5

a)

w = f/T = (2 pi * 15) / 120s = 1/4 pi

a_Z = (1/4 pi)² * 5,3m = 3,26m/s²

3,26m/s² / 9,81m/s² = 0,33 = 33%

b)

F_R = mue * F_N

=> F_G = mue * F_Z

=> g = mue * a_Z

g = mue * w² * r

=> w = [math]g/(mue * r)[/math] = [math]9,81/(0,1 * 4,2)[/math] s^-1 = 4,8s^-1

w = 2 * pi * f

=> f = w/2pi = 0,77s^-1

T = 1,3s