A small object moves in a circle on the end of a string on a horizontal frictionless table. Initially the object moves at 0.80 m/sat the end of a 20 cm string. The string is then pulled through a hole in the center of the table until the remaining string is only 0.40 m. 

A) Determine the initial angular momentum and initial kinetic energy of the object. 

B) Is the kinetic energy of the object constant? Explain why or why not. 

C) Is the angular momentum of the object constant? Explain why or why not.

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In response to the question Assume that the mass is M 08 ms initial speed Initially set the string l... View the full answer