A Child Is Sitting on the Seat of a Swing

question 54

Multiple Choice

A child is sitting on the seat of a swing with ropes 10 m long.Her father pulls the swing back until the ropes make a 37º angle with the vertical and then releases the swing.If air resistance is neglected,what is the speed of the child at the bottom of the arc of the swing when the ropes are vertical?

• A)11 m/s
• B)8.8 m/s
• C)14 m/s
• D)6.3 m/s
• E)12 m/s

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