Q31. a cylinder tied to a string of length l (see figure) takes time t to fully unwind. the size of the cylinder is then doubled, thus making its mass 8 times a

Q31. A cylinder tied to a string of length L (see figure) takes time T to fully unwind. The size of the cylinder is then doubled, thus making its mass 8 times and moment of inertia 32 times their former values. If the length of the string remains uncharged then the time taken to fülly unwind the string becomes (a) 8T (b) 4T () (d)T