[填空题]
A teenager pushes tangentially on a small hand-dri0 z)k6 iqppt2nven mer9eod skdkdmo273s a;)tt8m l( 9k-hhfry-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 chid ldh ;3do2 t7m)o9ka9-h s mfkkst8e(ldren (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
