A stone attached to a rope of length l = 80 cm is rotated with a speed of 240 r.p.m. At the moment when the velocity is directed vertically upwards, the rope breaks. To what height does the stone rise further?

A stone attached to a rope of length l = 80 cm is rotated with a speed

1.	A stone attached to a rope of length l = 80 cm is rotated with a speed of 240 r.p.m. At the moment when the velocity is directed vertically upwards, the rope breaks. To what height does the stone rise further?
A.	1.2 m
B.	20.6 m
C.	24.9 m
D.	41.2 m
Answer» C. 24.9 m