Question: A 2 0 kg child is on a swing. When the string is at a 4 5 degree angle below the horizontal the child is

20

kg child is on a swing. When the string is at a

45

degree angle below the horizontal the child is momentarily at rest as the forward swing transforms into the back swing. Determine the tension in the two

2

m ropes supporting the swing when the ropes are at

90

degrees

(

perpendicular

)

to the horizontal.

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