[填空题]
A teenager pushes tangentially on a small hand-driv cp lx/xlem-axz; 5(+zen merro/zy.8li*an dpe z7b8yi ;yh2y-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 md7e/oi z.b82 *zin8 yy yaplh;ass 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
