physics
posted by jojo .
A playground merrygoround of radius 2.00 m has a moment of inertia I = 255 kg·m2 and is rotating about a frictionless vertical axle. As a child of mass 25.0 kg stands at a distance of 1.00 m from the axle, the system (merrygoround and child) rotates at the rate of 14.0 rev/min. The child then proceeds to walk toward the edge of the merrygoround. What is the angular speed of the system when the child reaches the edge?
rad/s

Jojo/Joanna  do not post any more questions without your answers!
Homework Posting Tips
Please show your work. Tutors will not do your homework for you. Please show your work for any question that you are posting.
Respond to this Question
Similar Questions

Physics
A merrygoround in the park has a radius of 1.8 m and a rotational inertia of 900 kgm^2. A child pushes the merrygoround with a constant force of 80 N applied at the edge and parallel to the edge. A frictional torque of 12 Nm acts … 
Physics Inertia : Merrygoround
A playground merrygoround of radius 1.96 m has a moment of inertia 335 kg m2 and is rotating at 12.3 rev/min. A child with mass 43.1 kg jumps on the edge of the merrygoround. What is the new moment of inertia of the merrygoround … 
Physics: merrygoround question
A playground merrygoround of radius 1.92 m has a moment of inertia 411 kg m2 and is rotating at 10.4 rev/min. A child with mass 38.3 kg jumps on the edge of the merrygoround. Assuming that the boy's initial speed is negligible, … 
physics
A merrygoround in the park has a radius of 1.8 m and a rotational inertia of 900kgm^2. A child pushes the merrygoround with a constant force of 80 N applied at the edges and parallel to the edge. A frictional torque of 12 Nm acts … 
College Physics
A freely rotating merrygoround on a playground has a moment of inertia of 312 kgm2 and a radius of R=2.5 m. It is rotating with ω0=2.8 rad/s when a kid of mass 45 kg is standing on its outer rim. Neglecting friction, what is … 
physics
A merrygoround in a playground has a mass of 200 kg and radius of 1.50 m. You apply a force F = 23 N tangentially to the edge of the merrygoround for a time of 6.5 s. The moment of inertia of the merrygoround is 1/2(mR2). What … 
College Physics
A 40 kg child is standing on the edge of a merrygoround in a playground. Before they were deemed too dangerous, these were quite common. They were just huge rotating platforms you could sit on while someone spun you around in uniform … 
Physics
A playground merrygoround of radius R = 2.15 m has a moment of inertia of I = 256 kg * m2 and is rotating at 10.9 revolutions/min about a frictionless vertical axle. Facing the axle, a 29.6 kg child hops onto the merrygoround and … 
Physics
A playground merrygoround of radius R = 1.92m has a moment of inertia of I = 221kgm^2 and is rotating at 14.0rev/min about a frictionless vertical axle. Facing the axle, a 29.8kg child hops onto the merrygoround and manages to … 
physics
A playground merrygoround of radius R = 1.1 m has a moment of inertia of I = 280 kg*m^2. and is rotating at a rate of ω = 9 rev/min around a frictionless vertical axis. Facing the axle, a 37 kg child hops onto the merrygoround …