Two students are discussing the motion of the dart-block system at the instant it reaches height H. The students make the following statements: Student 1: The speed of the system at height H is zero. Since it is moving in a circular motion and centripetal acceleration is given by, the acceleration must also be zero. Student 2: The acceleration of the system at height H can’t be zero, or the system would not swing. The acceleration must be equal to g at height H.

Which underlined phrase or phrases, if either, are correct about student 1's statement? If neither phrase is correct, write "none."Read more on Sarthaks. com -