[填空题]
A teenager pushes tangentialfya;m*g sy o5znsx rk4z/2 8l)ly on a small hand-i xpji -3sz3/adriven 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 and 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 t/a3-ipx3ijsz o produce the acceleration, neglecting frictional torque. $\approx$ $m \cdot N$ What force is required at the edge? N