Shelf Stand
Shelf Stand
What initial horizontal velocity v should just clear the edge of the platform under you? ?
You are at the top of a cliff has a stairstep configuration. There is a gap of five meters in feet, then a horizontal platform 5 m, then a drop of 5 m at the bottom of the canyon, which has a horizontal floor. Kick a rock, 0.53 kg, giving a horizontal initial velocity that just clears the bottom shelf.
Bearing into account the vertical motion, the time of the rock to fall 5 meters is given by the equation y = Vo * t + (1.2) * g * t ^ 2 where Vo = 0. t gives you time time that the rock must be 5 meters displaced in the horizontal direction. Vh = d / t
Sean Erickson (Top Shelf) & Twist Borowitz (Thrive) ~ Stand By Me (Ben E. King Cover) 10~26~09
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