亲们,求高一物理题,急求
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亲们,求高一物理题,急求
亲们,求高一物理题,急求
亲们,求高一物理题,急求
GM/r²=g
GM=r²g
(1)GMm/(r+h)^2=m4π²(r+h)/T²
T=√4π²(r+h)³/GM==√[4π²(r+h)³/r²g]=2π(r+h)/r√(r+h)/g=5256s=87.6min=1.46h
(2)v=√GM/(r+h)=√r²g/(r+h)=7.8*10^3m/s
(3)g'=GM/(r+h)²=r²g0/(r+h)²=9.4m/s²