A Stone Is Tied to a 0

question 18

Multiple Choice

A stone is tied to a 0.50-m string and whirled at a constant speed of 4.0 m/s in a vertical circle.Its acceleration at the top of the circle is:

• A)9.8 m/s², up
• B)9.8 m/s², down
• C)8.0 m/s², down
• D)32 m/s², up
• E)32 m/s², down

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