[填空题]
A teenager pushes tavs. g21z j1gmsn: /g1g:w 3h4yt qkjgsgw9xbgx3/z2j hgentially 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 and has a3:wjqgx/ j:b32xkg y9 zs/1 gh4 ghgwt 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