【单选题】A 2.0kg sloth (懒熊) hangs on a limb 5.0m above the ground. I f we take the reference point y = 0 to be at the ground with potential energy U = 0, w hat is the gravitational potential energy U of the sl...
【单选题】A 2.0kg sloth (懒熊) hangs on a limb 5.0m above the ground. I f we take the reference point y = 0 to be at the limb with potential energy U = 0, w hat is the gravitational potential energy U of the slot...