A Stone Weighing 2 Pounds Is Attached to the End $201.06 \mathrm { ft } \cdot \mathrm { lbs }$

Multiple Choice

A stone weighing 2 pounds is attached to the end of a four-foot string and is whirled horizontally with one end held fixed. It makes 1 revolution per second. Find the work done by the Force F that keeps the stone moving in a circular path. [Hint: Use Force = (mass) (centripetal Acceleration) .] Round your answer to two decimal places, if required.

A) $201.06 \mathrm { ft } \cdot \mathrm { lbs }$
B) $0.00 \mathrm { ft } \cdot \mathrm { lbs }$
C) $804.25 \mathrm { ft } \cdot \mathrm { lbs }$
D) $256.00 \mathrm { ft } \cdot \mathrm { lbs }$
E) $12.57 \mathrm { ft } \cdot \mathrm { lbs }$