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A child on a swing set swings back and forth with a period of 3.3 s...

A child on a swing set swings back and forth with a period of 3.3 s and an amplitude of 25°. What is the maximum speed of the child as she swings?

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maximum a angle of swing0max maximum speed of child as she swingsat bottomv time period of oscillation =T= 3.3 sec at the bottom of swing the kinetic energy- and change in potential energy ΔU-mgL( 1-cos θmax ) length of swing from enrgy conservation mv cos time period T= 2π gT2 gT2 - coS !!(1-cose ) ; g=9.8m; T-3.3sec:0max=25。 -COS we plug the values in hand while using the relation give us im v 2.23

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