Normal
VTCB:\[a_{cb} = a_{n}=\frac{v^{2}}{l} = 2g(1-cos\alpha _{0})\]VT biên:\[a_{b} = a_{t}=\frac{Psin\alpha _{0}}{m} = gsin\alpha _{0}\]\[a_{b} = 10a_{cb}\Rightarrow sin\alpha _{0}=20(1-cos\alpha _{0})\Rightarrow \alpha _{0}=0,44 rad\]
VTCB:
\[a_{cb} = a_{n}=\frac{v^{2}}{l} = 2g(1-cos\alpha _{0})\]
VT biên:
\[a_{b} = a_{t}=\frac{Psin\alpha _{0}}{m} = gsin\alpha _{0}\]
\[a_{b} = 10a_{cb}\Rightarrow sin\alpha _{0}=20(1-cos\alpha _{0})\Rightarrow \alpha _{0}=0,44 rad\]
