A.T1=m1g B.T2=m2g C.T1=T2 D.T1≠T2,但T1,T2介于m1g和m2g之间
A.M/α1 B.M/α2 C.M/α1+α2 D.M/α1-α2
A.ml2/12 B.ml2/2 C.ml2sin2θ/3 D.ml2cos2θ/3