Question

尼

在講什麼😀

A
rope of mass M and length L hangs vertically. What is the time I needed for a
pulse to travel from the bottom end to the support?
(A) 0.5 (L/g)0.5; (B) (L/g) 0.5; (C) 2 (L/g) 0.5; (D) 2 (L/g); (E) None.
Which statement in
want for the 66t
220