已知:m=45千克,S=9.5平方厘米,g=9.8N/Kg
求:P
解:
P
=F/S
=mg/S
=45kg*9.8N/Kg/9.5cm^2
=441N/0.00095m^2
=4.64*10^5Pa
答:这位芭蕾舞演员一只脚尖着地事对地面的压强为4.64*10^5Pa
已知:m=45千克,S=9.5平方厘米,g=9.8N/Kg
求:P
解:
P
=F/S
=mg/S
=45kg*9.8N/Kg/9.5cm^2
=441N/0.00095m^2
=4.64*10^5Pa
答:这位芭蕾舞演员一只脚尖着地事对地面的压强为4.64*10^5Pa