posted by Anonymous .
Tarzan (m = 75 kg) tries to cross a river by swinging from a 10.0 m long vine. His speed at the bottom of the swing, just as he clears the water, is 8.0 m/s. What is the total force Tarzan excerts on the vine?
on Tarzan equal to M (g + a), where a is the centripetal acceleration, V^2/R.
Tarzan exerts the same force on the vine, in the opposite direction.