Wednesday, January 25, 2012

Tarzan (m = 89 kg) tries to cross a river by swinging from a 14.0 m long vine. . . . .?

His speed at the bottom of the swing, just as he clears the water, is 4.0 m/s. Tarzan doesn't know that the vine has a breaking strength of 1.0 103 N. What is the total force Tarzan excerts on the vine?

Tarzan (m = 89 kg) tries to cross a river by swinging from a 14.0 m long vine. . . . .?
F = ma

F = m*(g + v2/r) = 89*(9.8+ 42/14) = 973.9 N


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