00:01
For this problem, we are told that tarzan swings from a vine.
00:03
When he is at the bottom of the swing, as shown in figure 5 .63, we are asked, which is larger in magnitude? the force by the earth on tarzan, the force by the vine, attention force on tarzan, or neither they're the same magnitude.
00:17
So, to begin, we'll note that at this precise moment, tarzan is going to be moving tangent to the arc that he's going on, which means that if we're considering, the forces here, we would at very least have to have the force of gravity going downwards and a force of tension pulling upwards to cancel out the force of gravity.
00:45
But we also have to consider that he's not just moving straight horizontally.
00:53
Instead, at each point in the arc, his velocity vector is changing...