A Stone with a Mass of 1

question 93

Multiple Choice

A stone with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m. How much work does the tension in the string do on the stone as it makes one-half of a complete circle?

• A) 0 J
• B) 80 J
• C) 40 J
• D) 3.8 J
• E) 100 J

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