Question

5.) Tarzan is across the river from Cheetah, who is in danger of being blown up by a time-bomb set for 6.9 sec. Tarzan can save Cheetah only by swinging across the river on a 21 m vine hung directly over the center of the river. Because Tarzan is clinging to another vine, he can swing over only with the force of gravity and is unable to push off. Will he arrive in time to save Cheetah? If so, by what margin?

Answer 1

please rate it up thanks :)

Time period of Tarzan swing = 2 pi squareroot l/g = 2 pi squareroot 21/9.81 = 9.193 sec As time b0mb is set for 6.9 sec He won't be able to save by 2.293 sec