Tarzan swings on a vine 6.8 m long. The tension in the vine is 1200 N if he's moving at 2.9 m/s when the vine is vertical. What is his mass?

Answer 1

ma= T-mg
a=v²/L
m(a+g)=m(v²/L +g)=T
m=T/(v²/L +g)=
=1200/(2.9²/6.8 + 9.8)=13244 N