A 9.94-m ladder with a mass of 21.6 kg lies flat on the ground. A painter grabs the top end of the ladder and pulls straight upward with a force of 226 N. At the instant the top of the ladder leaves the ground, the ladder experiences an angular acceleration of 1.71 rad/s2 about an axis passing through the bottom end of the ladder. The ladder's center of gravity lies halfway between the top and bottom ends.
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and the qeustion is...
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