Oblicz masę ciała którego ciężar wynosi:
a) 2kgN
b) 3/10 mN
Fg - ciężar ciała
Fg= 2 kN = 2000 N
g = 10 N/kg
Fg= m*g /:g
Fg/g = m
m = Fg/g = 2000 N/(10 N/kg) = 200 kg
=========================
Fg= 0,3 mN = 0,3: 1000 N = 0,0003 N
m = Fg/g = 0,0003 N/(10 N/kg) = 0,00003 kg = 0,00003*1000 g = 0,03 g
===========================
Myślę, że chodzi o kiloniutony kN a nie kgN :-)
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Fg - ciężar ciała
Fg= 2 kN = 2000 N
g = 10 N/kg
Fg= m*g /:g
Fg/g = m
m = Fg/g = 2000 N/(10 N/kg) = 200 kg
=========================
Fg= 0,3 mN = 0,3: 1000 N = 0,0003 N
g = 10 N/kg
Fg= m*g /:g
Fg/g = m
m = Fg/g = 0,0003 N/(10 N/kg) = 0,00003 kg = 0,00003*1000 g = 0,03 g
===========================
Myślę, że chodzi o kiloniutony kN a nie kgN :-)