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m1 = 3kg
m2 = 2kg
g = 10N/kg
Szukane:
a = ?
F = ?
Wzór:
F = Q1 + Q2
Q1 = m1g
Q2 = m2g
F = g(m1 + m2) [m/s²×kg = N]
Fw = Q1 - Q2
Fw = mg1 - mg2
Fw = g(m1 - m2)
Fw = ma
m = m1 + m2
(m1 + m2)a = g(m1 - m2)
a = g(m1 - m2)/(m1 + m2) [kg×m/s² / kg = m/s²]
Rozwiązanie:
F = 10(2+3)
F = 50N
a = 10(3-2) / 5
a = 2m/s²
Odpowiedź:
Przyspieszenie układu to 2m/s², a siła napięcia nici wynosi 50N.