A catapult has got a thin slender cylindrical lever of 4 m length and 50 kg mass (ignore the
detailed spoon kind of shape). Loading the spring mechanism took 2 minutes with a constant
power of 2000 W. A rock of 150 kg is put at the tip of the lever in the horizontal position. In
order to shoot the rock, the lever is rotating from the horizontal to the vertical position. The
rock is gaining potential as well as motion energy. Calculate the maximum shooting distance!
The Attempt at a Solution
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