Odpowiedzi

2010-01-20T16:05:01+01:00
M = 200 kg
s= 2 m
g = 9,81 m/s^2 = 10 m/s^2 = 10 N/kg
W = ?
W = F * s ; F = m*g ; wstawiam do wzoru na pracę
W = m*g*s
W = 200 kg * 10 m/s^2 *2 m
W = 4000 J = 4 kJ
[kg*m/s^2 ] = [ N]
[N*m] = [J ]