A Block with Mass M, on the End of a String

question 34

Multiple Choice

A block with mass M, on the end of a string, moves in a circle on a horizontal frictionless table as shown.As the string is slowly pulled through a small hole in the table:

• A)the angular momentum of M remains constant
• B)the angular momentum of M decreases
• C)the kinetic energy of M remains constant
• D)the kinetic energy of M decreases
• E)none of the above

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