1 1 N 2 3 4 2 1 2 3 1 2 G=mg G N M kg g=9.8 / (N/kg)( g=10N/kg) 3 4 1 1 3 2 1 2 3 1 2 3 1 1 p= F S p Pa F N S 2 m 2 2 2 1 1 2 3 4 2 p= 1 2 p Pa kg/m3 g N/kg h m 3 3 3 1 2 1 1m 760mm 2 = 3 p ( ) 4 10.3m 3 76cm 10.3m 4 5 4 1 2 1 1 2 1 2 F = G = V g 3 3 1 2 1 1 2 = W=FS W J F N S m J F S F F = 2 1 2 P= W t P W W J T s 3 W kW 1W=1J/s 1kW=10 3 W 3 1 2 3 4 4 1 2 3 1 1 2 = F1L1=F2L2 3 L1 L2 F1 F2 L1 L2 F1 F2 L1= L2 F1= F2 2 1 2 3 3 1 W Gh W =G h G W =W W W =Fs 2 W W = W W 1 3 = Gh Fs G h F s
