A Stone Weighing 2 Pounds Is Attached to the End

question 7

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
• B) 0.00
• C) 804.25
• D) 256.00
• E) 12.57

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