tarzan tries to cross a river by swinging from one bank to the other on a vine that is 10.0 meters long. his speed at the bottom of the swimg is 8.0 meters/second. Tarzan does not know that the vine has a breaking strnght of 1000 newtons. what is the largest mass that tarzan can have and still make it safely across the river?
physics! - Damon, Sunday, January 24, 2010 at 12:24pm
Ac = v^2/r = 64/10 = 6.4 m/s^2
total tension = m (9.8+6.4) = 1000
m = 1000/(9.8+6.4)
physics! - drwls, Sunday, January 24, 2010 at 12:26pm
Rope tension at lowest point of swing
= M (g + a)
a = V^2/R
R = 10.0 m.
If it breaks,
m (g + V^2/R) = 1000 N
Solve for m. They tell you what v is. (It actually depends upon how high up he starts the jump)
physics! - gur, Wednesday, November 3, 2010 at 9:26pm