a pendilum consists ofa small object hanging from the ceiling at the end of the string of negligible mass. the string has length of 0.7m. with the string hanging vertically,the object is given an initial velocity of 2.0m/s parallel to the ground and swings upwards on a circular arc. eventually,the object comes to a momentary halt at a point where the string makes an a angle with its initial velocity orientation and then swings back downward. find the angle.
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