[填空题]
A teenager pushes tange3bq;v r) uw.hhntially o lu zu5a*fd)*h2zdlw -n a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency - 5z *lzdwhfuda*)lu2of 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 to produce the acceleration, neglecting frictional torque. $\approx$ $m \cdot N$ What force is required at the edge? N
Post time 2025-2-18 20:00:22
