[填空题]
A teenager pushes tans1mew7 0rxj rv.6 v.siz8hf ,f hypl8k2 hmtnm9z 1ox;l 0jbq4t,kb.3gentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 15 rpm in 10.0 s. Assume the merry-go-round is a uniform disk of radius 2.5 m ; x.ht9fmk b2 3yflphmk 0n1 4thzo8,jz8bq,land has a mass of 760 kg, and two children (each with a mass of 25 kg) sit opposite each other on the edge. Calculate the torque required to produce the acceleration, neglecting frictional torque. $\approx$ $m \cdot N$ What force is required at the edge? N
