Is it true that
we can apply toque = moment of inertia Xangular acceleration only
when moment of inertia about the axis which we are considering
should remain constant
The general Newton second law F = dp/dt where F is generalized force and p is generalized momentum. If you linear variable then F becomes force and p is linear momentum whereas if you take angular variable then F is torque and p is angular momentum. If inertia is constant then it goes to F=ma and m is generalized mass
Is this the same that when we use the variable mass system then we we generally use the formula dp/dt = Force ...
when the mass is constantt it becomes F=ma similarly can we say that L=Iw is more fundamental than torque =I x aplha which can be obtained when moment of inertia is constant