A 080-Kg Object Tied to the End of a 2

question 14

Multiple Choice

A 0.80-kg object tied to the end of a 2.0-m string swings as a pendulum. At the lowest point of its swing, the object has a kinetic energy of 10 J. Determine the speed of the object at the instant when the string makes an angle of 50° with the vertical.

• A) 5.6 m/s
• B) 4.4 m/s
• C) 3.3 m/s
• D) 5.0 m/s
• E) 6.1 m/s

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