Tóm tắt:
\(m=100kg\\ h=153km\\ T=5.10^3\left(s\right)\\ R_{TĐ}=6400km\)
\(a,v=?\\ b,F_{ht}=?N\)
Giải:
a, \(\omega=\dfrac{2\pi}{T}=\dfrac{2\pi}{5.10^3}=\dfrac{\pi}{2500}\) (rad/s)
\(r=R_{TĐ}+h=6400+153=6553\left(km\right)=6553000\left(m\right)\)
\(\Rightarrow\)\(v=\omega.r=\dfrac{\pi}{2500}.6553000\approx2,62\pi\) (m/s)
b, \(F_{ht}=m.a_{ht}=m.\omega^2.r=100.\left(\dfrac{\pi}{2500}\right)^2.6553000=104,848\pi^2\) (N)