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The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.3 m/s. Neglect nonconservative forces, such as friction and air resistance, and find the height h of the highest point reached by the skateboarder on the right side of the ramp.A pendulum consists ofa small object hanging from the ceiling at the end of a string of negligible mass. The string has a length of 0.79 m.With the string hanging vertically, the object is given an initial velocity of 1.7 mfs parallel to the ground and swings upward in a circular arc. Eventually, the object comes to a momentary halt at a point where the string makes an angle 6' with its initial vertical orientation and then swings back downward. Find the angle 6'. A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. An BEGkg helicopter rises from rest to a speed of 7.0 n'u's in a time of 3.0 s. During this time it climbs to a height of 7.5 m. What is the average power generated by the lifting force