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|| A 76.0 kg boulder is rolling horizontally at the top of a vertical cliff that is 20.0 n above the surface of a lake, as shown in Figure 3.42. The top of the vertical face of a dam is located 100 0 m from the foot of the cliff, with the :op of the cam level with the surface of the water n the lake. A level plain is 25.0 n below the top of the dam. (a) What must the minimum speed of the rock be just as it leaves the cliff so that t will travel to the plain without s:r king the dam? (b) How far from the foot of the dam does the rock hit the plan?
Figure 3.42
Problem 56.
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