[问答题]
A pendulum is launched from a
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*.lhtnre:fa -x8bo8 t oint that is a height h above its lowest point in two different ways (Fig. 6–32). During both launches, the
hob8l*xn ft 8-:t. rea pendulum is given an initial speed of 3.0m/s On the first launch, the initial velocity of the pendulum is directed upward along the trajectory, and on the second launch it is directed downward along the trajectory. Which launch will cause it to swing the largest angle from the equilibrium position? Explain.
