M=4t
d=15m
t=2,5min
P=?(puterea mecanica)
v=d.t=15x2,5=37,5m/s
G=F
G=m.g=4t.10N/kg=4000kg.10N/kg=40000N
F=40000N
P=F.V
P=40000N.37,5m/s
37,5m/s=10,4km/h
P=40000N.10,4km/h=416000W(watt)
1CP=736W
=>416000:736=565,2174 Cp gata
Alexvm întreabă: