A Stone Is Tied to a String and Whirled at Constant

question 49

Multiple Choice

A stone is tied to a string and whirled at constant speed in a horizontal circle.The speed is then doubled without changing the length of the string.Afterward the magnitude of the acceleration of the stone is:

• A)the same
• B)twice as great
• C)four times as great
• D)half as great
• E)one-fourth as great

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