Aplayground merry-go-round has radius 2.10m and moment - id210250023115605 от j1theking18 30.03.2022 13:48

Question

Physics: Aplayground merry-go-round has radius 2.10m and moment of inertia 2500kg*m^2 about a vertical axle through its center, and it turns with negligible friction. a)a child applies an 18.0 n force tangentially to the edge of the merry-go-round for 16.0s . if the merry-go-round is initially at rest, what is its angular speed after this 16.0s interval? in rad/s b)how much work did the child do on the merry-go-round? c)what is the average power supplied by the child? i understand the jist of the question

j1theking18 · Accepted Answer

The mathematical relationship between force and extension for a spring is F = -kx , where F is the restoring force, k is the spring constant and x is the extension. If a box that weighs 40 N is hung from a spring of content 400 N/m, then the extension is equal to x = -F / k = -400 / 40 = -10 cm. The negative sign simply shows the extension and restoring force are in opposite directions. The answer is 10 cm. ...

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