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makeAwish
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Homework Statement
A playground merry-go-round has radius 2.00m and moment of inertia 3000kgm² about a vertical axle through its center, and it turns with negligible friction.
A child applies an 18.0N force tangentially to the edge of the merry-go-round for 25.0s . If the merry-go-round is initially at rest, what is its angular speed after this 25.0s interval?
The attempt at a solution
I have no idea what to apply actually. I only thinking of treating the child as a particle.
Moment of inertia of child = mr²
Can apply consv of angular momentum? But is the child considered to be acting external force?
Can someone help me pls? Thanks!
A playground merry-go-round has radius 2.00m and moment of inertia 3000kgm² about a vertical axle through its center, and it turns with negligible friction.
A child applies an 18.0N force tangentially to the edge of the merry-go-round for 25.0s . If the merry-go-round is initially at rest, what is its angular speed after this 25.0s interval?
The attempt at a solution
I have no idea what to apply actually. I only thinking of treating the child as a particle.
Moment of inertia of child = mr²
Can apply consv of angular momentum? But is the child considered to be acting external force?
Can someone help me pls? Thanks!