[tex]Dane:\\m = 80 \ kg\\h = 16 \ m\\t = 8 \ s\\g = 10\frac{m}{s^{2}}=10\frac{N}{kg}\\Szukane:\\P = ?[/tex]
Rozwiązanie
Z definicji mocy:
[tex]P = \frac{W}{t}\\\\ale\\\\W = E_{p} = mgh = 80 \ kg\cdot10\frac{N}{kg}\cdot16 \ m = 12 \ 800 \ J\\\\zatem\\\\P = \frac{12 \ 800 \ J}{8 \ s}\\\\\boxed{P = 1 \ 600 \ W = 1,6 \ kW}\\\\(1 \ kW = 1000 \ W)[/tex]
Odp. Moc silnika wynosi 1,6 kW.
[tex]P=\frac{W}{t} =\frac{mgh}{t} \\m=80kg\\h=16m\\t=8s\\P=\frac{80*9.81*16}{8} =1570W[/tex]
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[tex]Dane:\\m = 80 \ kg\\h = 16 \ m\\t = 8 \ s\\g = 10\frac{m}{s^{2}}=10\frac{N}{kg}\\Szukane:\\P = ?[/tex]
Rozwiązanie
Z definicji mocy:
[tex]P = \frac{W}{t}\\\\ale\\\\W = E_{p} = mgh = 80 \ kg\cdot10\frac{N}{kg}\cdot16 \ m = 12 \ 800 \ J\\\\zatem\\\\P = \frac{12 \ 800 \ J}{8 \ s}\\\\\boxed{P = 1 \ 600 \ W = 1,6 \ kW}\\\\(1 \ kW = 1000 \ W)[/tex]
Odp. Moc silnika wynosi 1,6 kW.
[tex]P=\frac{W}{t} =\frac{mgh}{t} \\m=80kg\\h=16m\\t=8s\\P=\frac{80*9.81*16}{8} =1570W[/tex]