Odpowiedzi

2009-12-23T20:26:48+01:00
M = 100 g = 0,1 kg
n = 7
r = 45 cm = 0,45 m
t = 3 s

F = (m * v^2) / r
v = (7 * Ob) / t
Ob = 2 * π * r
v = (14 * π * r) / t
F = (196 * m * r * π^2) / t^2
F = (196 * 0,1 * 0,5 * π^2) / 3^2
F = 10,75 N
4 3 4