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23 Nov 2019
A playground merry-go-round has a radius of 4.20 {\rm m} and amoment of inertia of 255 kg m^2 and turns with negligible frictionabout a vertical axle through its center.
1)A child applies a 20.0 {\rm N} force tangentially to the edge ofthe merry-go-round for 22.0 {\rm s}. If the merry-go-round isinitially at rest, what is its angular velocity after this 22.0{\rm s} interval?
2)How much work did the child do on the merry-go-round?
3)What is the average power supplied by the child?
A playground merry-go-round has a radius of 4.20 {\rm m} and amoment of inertia of 255 kg m^2 and turns with negligible frictionabout a vertical axle through its center.
1)A child applies a 20.0 {\rm N} force tangentially to the edge ofthe merry-go-round for 22.0 {\rm s}. If the merry-go-round isinitially at rest, what is its angular velocity after this 22.0{\rm s} interval?
2)How much work did the child do on the merry-go-round?
3)What is the average power supplied by the child?
Jamar FerryLv2
3 May 2019
