1. 750г = 0,75кг
F=mg= 0,75x10 = 7,5H
2. F=kx
x = F/k = 10/400 = 0,025м = 2,5 см
5. V=S= 0,4x0,5x1= 0,2м³
5кH= 5000H
p=mg
m=ρV
ρ= p/Vg = 5000/0,2 x 10= 2,500кг/м³
6. F= μmg
μ= F/mg = 24/6x10= 0,40
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Answers & Comments
1. 750г = 0,75кг
F=mg= 0,75x10 = 7,5H
2. F=kx
x = F/k = 10/400 = 0,025м = 2,5 см
5. V=S= 0,4x0,5x1= 0,2м³
5кH= 5000H
p=mg
m=ρV
ρ= p/Vg = 5000/0,2 x 10= 2,500кг/м³
6. F= μmg
μ= F/mg = 24/6x10= 0,40