physics
posted by Alyssa .
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 at the axle of the merrygoround.
a. what is the net torque acting on the merrygoround about its axle?
b. what is the rotational acceleration of the merrygoround?
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