# Physics

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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?

• Physics -

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

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